From dd1449df8c3cdcd3714f649433fd382b03f4e43d Mon Sep 17 00:00:00 2001 From: Laofan <545690097@qq.com> Date: Fri, 31 May 2024 05:54:43 +0000 Subject: [PATCH 01/11] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=20wo?= =?UTF-8?q?rk/com/java/minxi/java=5F20240517/java=5F2302=5F=E5=90=B4?= =?UTF-8?q?=E6=86=B6=E8=B1=AA=5F2244310224?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../SetAndMap/map1.java" | 80 ------------------- .../SetAndMap/map2.java" | 39 --------- .../SetAndMap/set.java" | 78 ------------------ .../bigdecimal/bigdecimal1to2.java" | 32 -------- .../bigdecimal/bigdecimal3.java" | 14 ---- .../bigdecimal/bigdecimal4.java" | 23 ------ .../date/date1.java" | 10 --- .../date/date2.java" | 31 ------- .../date/date3and4.java" | 21 ----- .../date/date5.java" | 14 ---- .../math/absolutevalue.java" | 21 ----- .../math/avg.java" | 24 ------ .../math/minmax.java" | 28 ------- .../math/random.java" | 12 --- .../math/round.java" | 21 ----- .../person.java" | 60 -------------- .../string/string13.java" | 21 ----- .../string/string14.java" | 22 ----- .../string/string15.java" | 24 ------ .../string/string1and2.java" | 15 ---- .../string/string3.java" | 11 --- .../string/string4.java" | 16 ---- .../string/string5.java" | 23 ------ .../string/string6.java" | 12 --- .../string/string7.java" | 29 ------- .../string/string8.java" | 15 ---- .../string/string9to12.java" | 21 ----- 27 files changed, 717 deletions(-) delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map1.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map2.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/set.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal1to2.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal3.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal4.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date1.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date2.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date3and4.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date5.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/absolutevalue.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/avg.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/minmax.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/random.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/round.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string13.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string14.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string15.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string1and2.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string3.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string4.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string5.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string6.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string7.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string8.java" delete mode 100644 "work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string9to12.java" diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map1.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map1.java" deleted file mode 100644 index 541b282..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map1.java" +++ /dev/null @@ -1,80 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.SetAndMap; - -import java.util.Collection; -import java.util.HashMap; -import java.util.Map; -import java.util.Set; - - public class map1 {/*1. **创建和添加键值对** - 创建一个 `HashMap` 并添加至少3对键值对，键可以是字符串，值可以是整数。*/ - - public static void main(String[] args) { - Map map = new HashMap<>(); - map.put("狗", "1"); - map.put("猫", "2"); - map.put("鼠", "3"); - - /*2. **获取和打印值** - 使用键来获取对应的值，并打印出来。 */ - String keytofind = "鼠"; - String value = map.get(keytofind); - if (value != null) { - System.out.println(keytofind + "," + value); - } else { - System.out.println(keytofind + "not found"); - } - /* 3. **检查键是否存在** - 检查一个特定的键是否存在于 `HashMap` 中。*/ - String keytocheck = "猫"; - if (map.containsKey(keytocheck)) { - System.out.println(keytocheck + "exists in the hashmap"); - } else { - System.out.println(keytocheck + "dose not exist in the hashmap"); - } - - /* 4. **键集合遍历** - 遍历 `HashMap` 的键集合，并打印每个键。*/ - Set keys = map.keySet(); - - for (String mapkey : keys) { - System.out.println(keys); - } - - /* 5. **值集合遍历** - 遍历 `HashMap` 的值集合，并打印每个值。*/ - Collection values = map.values(); - - for (String mapvalue : values) { - System.out.println(value); - } - - /* 6. **键值对遍历** - 使用 `entrySet()` 遍历 `HashMap` 的所有键值对，并打印。*/ - for (Map.Entry entry : map.entrySet()) { - System.out.println("key:" + entry.getKey() + ",value:" + entry.getValue()); - } - - /* 7. **更新值** - 对一个已存在的键更新其对应的值。*/ - String keytoupdate = "鼠"; - int newValue = 0; - map.put(keytoupdate, String.valueOf(newValue)); - System.out.println(map); - - /*8. **移除键值对** - 移除一个特定的键值对，并确认它已被移除。*/ - String keytoremove = "鼠"; - String removedvalue = map.remove(keytoremove); - if (removedvalue != null) { - System.out.println("已移除:" + keytoremove ); - } else { - System.out.println("不存在:" + keytoremove); - } - System.out.println("剩余" + map); - /* 9. **Map 的大小** - 打印出 `HashMap` 的大小。*/ - System.out.println("size:" + map.size()); - } - } - - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map2.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map2.java" deleted file mode 100644 index 0e3fea1..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/map2.java" +++ /dev/null @@ -1,39 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.SetAndMap; - -import java.util.HashMap; - - /*10. **使用泛型** - 创建一个泛型 `HashMap`，键为自定义对象，值为字符串，并添加键值对。*/ - - class CustomKey { - int id; - public CustomKey(int id) { - this.id = id; - } - @Override - public boolean equals(Object o) { - if (this == o) return true; - if (o == null || getClass() != o.getClass()) return false; - - CustomKey that = (CustomKey) o; - - return id == that.id; - } - @Override - public int hashCode() { - return id; - } - } - public class map2 { - public void main(String[] args) { - - HashMap customHashMap = new HashMap<>(); - - CustomKey customKey = new CustomKey(1); - - customHashMap.put(customKey, "Example Value"); - - System.out.println(customHashMap); - } - } - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/set.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/set.java" deleted file mode 100644 index e797ae4..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/SetAndMap/set.java" +++ /dev/null @@ -1,78 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.SetAndMap; - -import java.util.Arrays; -import java.util.HashSet; -import java.util.Iterator; -import java.util.Set; - - public class set {/*1. **创建和添加元素** - 创建一个 `HashSet` 并添加至少5个不同的字符串元素。*/ - - public static void main(String[] args) { - Set set = new HashSet<>(); - set.add("a"); - set.add("b"); - set.add("c"); - set.add("d"); - - /* 2. **元素检查** - 检查一个特定的字符串是否已经存在于你创建的 `HashSet` 中。*/ - System.out.println("是否存在某个元素" + set.contains("a")); - - /*3. **元素移除** - 从 `HashSet` 中移除一个已存在的元素，并确认它已被移除。*/ - set.remove("a"); - System.out.println("已移除" + set); - - /* 4. **集合大小** - 打印出 `HashSet` 的大小。*/ - System.out.println("大小" + set.size()); - - /* 5. **集合遍历** - 使用增强型 `for` 循环遍历 `HashSet` 并打印每个元素。*/ - for (String ele : set) { - System.out.println(ele); - } - - /*6. **集合转换为数组** - 将 `HashSet` 转换为数组，并打印数组中的每个元素。*/ - String[] array = set.toArray(new String[0]); - System.out.println(Arrays.toString(array)); - - /*7. **集合的并集** -创建两个 `HashSet` 对象，实现它们的并集操作。*/ - HashSet setA = new HashSet<>(); - setA.add("1"); - setA.add("2"); - setA.add("3"); - - HashSet setB = new HashSet<>(); - setB.add("2"); - setB.add("3"); - setB.add("4"); - - HashSet result = new HashSet<>(); - - result.addAll(setA); - result.addAll(setB); - System.out.println("并集:"+ result); - /* Iterator it = resset.iterator(); - while(it.hasNext()){ - object ele = (object) it.next(); - System.out.println(ele); - };*/ - /* 8. **集合的交集** -对上面创建的两个 `HashSet` 对象实现交集操作。*/ - result.clear(); - result.addAll(setA); - result.retainAll(setB); - System.out.println("交集"+ result); - /*9. **集合的差集** -对上面创建的两个 `HashSet` 对象实现差集操作。*/ - result.clear(); - result.addAll(setA); - result.removeAll(setB); - System.out.println("差集"+ result); - } - } - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal1to2.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal1to2.java" deleted file mode 100644 index be6dea7..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal1to2.java" +++ /dev/null @@ -1,32 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.bigdecimal; -import java.math.BigDecimal; - -public class bigdecimal1to2 { - - public static BigDecimal add(BigDecimal a, BigDecimal b) { - return a.add(b); - } - - public static BigDecimal subtract(BigDecimal a, BigDecimal b) { - return a.subtract(b); - } - - public static BigDecimal multiply(BigDecimal a, BigDecimal b) { - return a.multiply(b); - } - - public static BigDecimal divide(BigDecimal a, BigDecimal b) { - return a.divide(b); - } - - public static void main(String[] args) { - BigDecimal a = new BigDecimal("10.5"); - BigDecimal b = new BigDecimal("2.3"); - - System.out.println("加法: " + add(a, b)); - System.out.println("减法: " + subtract(a, b)); - System.out.println("乘法: " + multiply(a, b)); - System.out.println("除法: " + divide(a, b)); - } - } - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal3.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal3.java" deleted file mode 100644 index 9e2a4a4..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal3.java" +++ /dev/null @@ -1,14 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.bigdecimal; -import java.math.BigDecimal; -import java.math.RoundingMode; -public class bigdecimal3 { - - public static void main(String[] args) { - BigDecimal originalValue = new BigDecimal("3.1415926535897932384"); - int scale = 5; - RoundingMode roundingMode = RoundingMode.HALF_UP; - - BigDecimal roundedValue = originalValue.setScale(scale, roundingMode); - System.out.println("Rounded Value: " + roundedValue); - } - } diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal4.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal4.java" deleted file mode 100644 index 8282a8f..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/bigdecimal/bigdecimal4.java" +++ /dev/null @@ -1,23 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.bigdecimal; -import java.math.BigDecimal; -public class bigdecimal4 { - - public static int compareBigDecimals(BigDecimal bd1, BigDecimal bd2) { - return bd1.compareTo(bd2); - } - - public static void main(String[] args) { - BigDecimal bd1 = new BigDecimal("10.0"); - BigDecimal bd2 = new BigDecimal("10.000"); - - int comparisonResult = compareBigDecimals(bd1, bd2); - - if (comparisonResult == -1) { - System.out.println("bd1 is less than bd2"); - } else if (comparisonResult == 0) { - System.out.println("bd1 is equal to bd2"); - } else if (comparisonResult == 1) { - System.out.println("bd1 is greater than bd2"); - } - } - } diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date1.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date1.java" deleted file mode 100644 index 04a4eb6..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date1.java" +++ /dev/null @@ -1,10 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.date; - -import java.util.Date; - -public class date1 { - public static void main(String[] args) { - Date now = new Date(); - System.out.println("time:"+now);} - -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date2.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date2.java" deleted file mode 100644 index e93a4ce..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date2.java" +++ /dev/null @@ -1,31 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.date; - -import java.util.Calendar; -import java.util.Date; - -public class date2 { - public static int getYear(Date date) { - Calendar calendar = Calendar.getInstance(); - calendar.setTime(date); - return calendar.get(Calendar.YEAR); - } - - public static int getMonth(Date date) { - Calendar calendar = Calendar.getInstance(); - calendar.setTime(date); - return calendar.get(Calendar.MONTH) + 1; - } - - public static int getDayOfMonth(Date date) { - Calendar calendar = Calendar.getInstance(); - calendar.setTime(date); - return calendar.get(Calendar.DAY_OF_MONTH); - } - - public static void main(String[] args) { - Date date = new Date(); - System.out.println("Year:" + getYear(date)); - System.out.println("Month:" + getMonth(date)); - System.out.println("Day of Month" + getDayOfMonth(date)); - } -} \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date3and4.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date3and4.java" deleted file mode 100644 index 09815d4..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date3and4.java" +++ /dev/null @@ -1,21 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.date; - -import java.text.ParseException; -import java.text.SimpleDateFormat; -import java.util.Date; - -public class date3and4 { - public static void main(String[] args) { - Date currentDate = new Date(); - SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); - String formattedDate = formatter.format(currentDate); - System.out.println("Formatted Date:"+formattedDate); - - try{ - Date newDate = formatter.parse(formattedDate); - System.out.println("Formatted String:"+newDate); - } catch (ParseException e){ - e.printStackTrace(); - } - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date5.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date5.java" deleted file mode 100644 index fae56bb..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/date/date5.java" +++ /dev/null @@ -1,14 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.date; - -import java.text.SimpleDateFormat; -import java.util.Date; - -public class date5 { - public static void main(String[] args) { - long timestamp = System.currentTimeMillis(); - Date date = new Date(timestamp); - System.out.println("timestamp:"+timestamp); - System.out.println("translatedDate"+date); - - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/absolutevalue.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/absolutevalue.java" deleted file mode 100644 index 47375eb..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/absolutevalue.java" +++ /dev/null @@ -1,21 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.math;/*`Math` 类练习题： - - 1. 绝对值 - - 编写一个程序，接受一个用户输入的数字，然后输出该数字的绝对值。*/ - -import java.util.Scanner; - -public class absolutevalue { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - - System.out.println("please add a number"); - double number = scanner.nextDouble(); - - double absolutevalue = Math.abs(number); - System.out.println("math.absolutevalue:"+absolutevalue); - - scanner.close(); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/avg.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/avg.java" deleted file mode 100644 index 8688fbc..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/avg.java" +++ /dev/null @@ -1,24 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.math; - -/*5.计算平均值 - - - 创建一个方法，接受一个整数数组，并返回数组的平均值。*/ -public class avg { - public static double caculateAverage(int[] numbers) { - if (numbers == null || numbers.length == 0) { - throw new IllegalArgumentException("the numbers array is false"); - } - int sum = 0; - for (int number : numbers) { - sum += number; - } - return sum / (double) numbers.length; - } - - - public static void main(String[] args) { - int[] numbers = {1, 2, 3, 4, 5}; - double average = caculateAverage(numbers); - System.out.println("the average is:" + average); - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/minmax.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/minmax.java" deleted file mode 100644 index d8e1037..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/minmax.java" +++ /dev/null @@ -1,28 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.math; - - -/*2.最小值和最大值 - - - 创建一个方法，接受三个整数作为参数，返回这三个整数中的最小值和最大值。*/ -public class minmax { - public static void main(String[] args) { - int a = 5; - int b = 10; - int c = 15; - - int min = findMin(a,b,c); - int max = findMax(a,b,c); - - System.out.println("minimum:"+ min); - System.out.println("maximum:"+ max); - } - - public static int findMin(int num1,int num2,int num3){ - return Math.min(Math.min(num1,num2),num3); - } - - public static int findMax(int num1,int num2,int num3){ - return Math.max(Math.max(num1,num2),num3); - } - -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/random.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/random.java" deleted file mode 100644 index 47ece21..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/random.java" +++ /dev/null @@ -1,12 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.math; - -/*4.随机数生成 - - - 使用 `Math.math.random()` 方法生成一个 0 到 1 之间的随机数，并将其乘以一个用户指定的最大值。*/ -public class random { - public static void main(String[] args) { - int upperBound = 2; - int randomNumber = (int)(Math.random() * upperBound); - System.out.println("randomNumber:"+randomNumber); - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/round.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/round.java" deleted file mode 100644 index 2d0c822..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/math/round.java" +++ /dev/null @@ -1,21 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.math; - -import java.util.Scanner; - -/*3.四舍五入 - - - 编写一个程序，接受一个浮点数作为输入，并将其四舍五入到最近的整数。*/ -public class round { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - - System.out.println("please add a floatnumber"); - double floatnumber = scanner.nextDouble(); - - int roundedNumber = (int) Math.round(floatnumber); - System.out.println("math.round:"+ roundedNumber); - - scanner.close(); - } - -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" deleted file mode 100644 index f3187b0..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" +++ /dev/null @@ -1,60 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224; - -import java.util.Objects; - -/*`Object` 类练习题： - - 1. 重写 `toString` 方法 - - 创建一个 `Person` 类，包含 `name` 和 `age` 属性。重写 `toString` 方法，使其返回一个字符串，包含对象的 `name` 和 `age`。*/ -public class person { - private String name; - private int age; - - - - - public person(String name, int age){ - this.name = name; - this.age = age; - } - - public String getName () { - return name; - } - - public void setName (String name){ - this.name = name; - } - - public int getAge () { - return age; - } - - public void setAge ( int age){ - this.age = age; - } - - @Override - public String toString () { - return "name=" + name + ",age=" + age; - } - - -/*使用 `equals` 方法 - - - 在 `Person` 类中重写 `equals` 方法，使得可以通过 `name` 和 `age` 属性比较两个 `Person` 对象是否相等。*/ - @Override - public boolean equals (Object o){ - if (this == o) return true; - if (o == null || getClass() != o.getClass()) return false; - person person = (person) o; - return age == person.age && - Objects.equals(name, person.name); - } - - @Override - public int hashCode () { - return Objects.hash(name, age); - } - } - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string13.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string13.java" deleted file mode 100644 index 99a5128..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string13.java" +++ /dev/null @@ -1,21 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string13 { - public static void main(String[] args) { - String str = "Hello, World!"; - char charToFind = 'o'; - int count = countChar(str, charToFind); - System.out.println("The character '" + charToFind + "' appears " + count + " times."); - } - - public static int countChar(String str, char charToFind) { - int count = 0; - for (int i = 0; i < str.length(); i++) { - if (str.charAt(i) == charToFind) { - count++; - } - } - return count; - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string14.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string14.java" deleted file mode 100644 index c3200fa..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string14.java" +++ /dev/null @@ -1,22 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string14 { - - public static void main(String[] args) { - String intString = "123"; - String floatString = "123.45"; - - int intValue = Integer.parseInt(intString); - float floatValue = Float.parseFloat(floatString); - - System.out.println("整数转换结果: " + intValue); - System.out.println("浮点数转换结果: " + floatValue); - - String intStringValue = String.valueOf(intValue); - String floatStringValue = String.valueOf(floatValue); - - System.out.println("整数转换为字符串: " + intStringValue); - System.out.println("浮点数转换为字符串: " + floatStringValue); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string15.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string15.java" deleted file mode 100644 index c0ab1ff..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string15.java" +++ /dev/null @@ -1,24 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string15 { - public static void main(String[] args) { - String str1 = "Hello"; - String str2 = "World"; - String str3 = "Java"; - - StringBuilder sb = new StringBuilder(); - for (int i = 0; i < 3; i++) { - if (i > 0) { - sb.append("*"); - } - sb.append(str1); - sb.append("*"); - sb.append(str2); - sb.append("*"); - sb.append(str3); - } - - System.out.println(sb.toString()); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string1and2.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string1and2.java" deleted file mode 100644 index 5bf276d..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string1and2.java" +++ /dev/null @@ -1,15 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; -import static java.lang.reflect.Array.getLength; - -public class string1and2 { - public static void main(String[] args) { - String str1 = "Hello"; - String str2 = "World"; - String concatenatedString = str1 + "" + str2; - System.out.println(concatenatedString); - - int length = getLength(str1); - System.out.println("length:" + length); - } - -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string3.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string3.java" deleted file mode 100644 index d7319ca..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string3.java" +++ /dev/null @@ -1,11 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string3 { - public static void main(String[] args) { - String input = "Hello,World"; - String[] words = input.split(","); - for (String word : words){ - System.out.println(word); - } - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string4.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string4.java" deleted file mode 100644 index bbf73d4..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string4.java" +++ /dev/null @@ -1,16 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string4 { - public static String reverse(String original){ - if (original == null){ - return null; - } - return new StringBuilder(original).reverse().toString(); - } - - public static void main(String[] args) { - String original = "Hello World"; - String reversed =reverse(original); - System.out.println(reversed); - } -} diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string5.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string5.java" deleted file mode 100644 index c248120..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string5.java" +++ /dev/null @@ -1,23 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string5 { - - public static String toLowerCase(String input) { - return input.toLowerCase(); - } - - public static String toUpperCase(String input) { - return input.toUpperCase(); - } - - public static void main(String[] args) { - String original = "Java Programming"; - - String lowerCase = toLowerCase(original); - System.out.println("小写: " + lowerCase); - - String upperCase = toUpperCase(original); - System.out.println("大写: " + upperCase); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string6.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string6.java" deleted file mode 100644 index 2b1532f..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string6.java" +++ /dev/null @@ -1,12 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string6 { - public static void main(String[] args) { - String haystack = "Hello, this is a simple test!"; - String needle = "simple"; - - boolean contains = haystack.contains(needle); - System.out.println("字符串 '" + haystack + "' 是否包含子字符串 '" + needle + "': " + contains); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string7.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string7.java" deleted file mode 100644 index d11cc58..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string7.java" +++ /dev/null @@ -1,29 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string7 { - public static String replaceAll(String str, char oldChar, char newChar) { - if (str == null) { - return null; - } - StringBuilder sb = new StringBuilder(); - for (int i = 0; i < str.length(); i++) { - char c = str.charAt(i); - if (c == oldChar) { - sb.append(newChar); - } else { - sb.append(c); - } - } - return sb.toString(); - } - - public static void main(String[] args) { - String original = "Hello World!"; - char oldChar = 'o'; - char newChar = '0'; - - String replaced = replaceAll(original, oldChar, newChar); - System.out.println(replaced); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string8.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string8.java" deleted file mode 100644 index ae40295..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string8.java" +++ /dev/null @@ -1,15 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string8 { - public static void main(String[] args) { - String originalString = " Hello, World! "; - String trimmedString = trim(originalString); - System.out.println("Original String: " + originalString); - System.out.println("Trimmed String: " + trimmedString); - } - - public static String trim(String s) { - return s.trim(); - } -} - diff --git "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string9to12.java" "b/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string9to12.java" deleted file mode 100644 index dece845..0000000 --- "a/work/com/java/minxi/java_20240517/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/string/string9to12.java" +++ /dev/null @@ -1,21 +0,0 @@ -package com.java.minxi.java_20240517.java_2302_吴憶豪_2244310224.string; - -public class string9to12 { - public static void main(String[] args) { - String str1 = "Hello"; - String str2 = "hello"; - - boolean areEqual = str1.equalsIgnoreCase(str2); - System.out.println("Strings are equal (ignoring case): " + areEqual); - - String substring = str1.substring(1,3); - System.out.println(substring); - - boolean result1 = str1.endsWith("o"); - System.out.println("结果:"+result1); - - boolean result2 = str2.startsWith("H"); - System.out.println("结果:"+result2); - } -} - -- Gitee From a79275c4d0085b68d655738cc499d288acd8e878 Mon Sep 17 00:00:00 2001 From: Laofan <545690097@qq.com> Date: Fri, 31 May 2024 05:54:50 +0000 Subject: [PATCH 02/11] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=20wo?= =?UTF-8?q?rk/com/java/minxi/java=5F20240522/java=5F2302=5F=E5=90=B4?= =?UTF-8?q?=E6=86=B6=E8=B1=AA=5F2244310224?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../person.java" | 31 -------------- .../rectangle.java" | 40 ------------------- 2 files changed, 71 deletions(-) delete mode 100644 "work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" delete mode 100644 "work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/rectangle.java" diff --git "a/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" "b/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" deleted file mode 100644 index 425488b..0000000 --- "a/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/person.java" +++ /dev/null @@ -1,31 +0,0 @@ -package com.java.minxi.java_20240522.java_2302_吴憶豪_2244310224; - -public class person { - private String firstName; - private String lastName; - - public person(String firstName, String lastName) { - this.firstName = firstName; - this.lastName = lastName; - } - public void printFullName(){ - System.out.println(firstName+""+lastName); - } - - public String getFirstName() { - return firstName; - } - - public void setFirstName(String firstName) { - this.firstName = firstName; - } - - public String getLastName() { - return lastName; - } - - public void setLastName(String lastName) { - this.lastName = lastName; - } -} - diff --git "a/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/rectangle.java" "b/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/rectangle.java" deleted file mode 100644 index 17b3764..0000000 --- "a/work/com/java/minxi/java_20240522/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/rectangle.java" +++ /dev/null @@ -1,40 +0,0 @@ -package com.java.minxi.java_20240522.java_2302_吴憶豪_2244310224; - -import java.util.Scanner; - -class Rectangle { - private double width; - private double height; - - public Rectangle(double width, double height) { - this.width = width; - this.height = height; - } - - public double getArea(){ - return width * height; - } - public double getPerimeter(){ - return 2*(width+height); - } -} -public class rectangle { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - - System.out.println("please add width:"); - double width = scanner.nextDouble(); - - System.out.println("please add height"); - double height = scanner.nextDouble(); - - Rectangle rectangle = new Rectangle(width, height); - - double area = rectangle.getArea(); - double perimeter = rectangle.getPerimeter(); - - System.out.println("area:" + area); - System.out.println("perimeter:" + perimeter); - - } -} \ No newline at end of file -- Gitee From 70289afd479c27b271a66bdb1f62065109739149 Mon Sep 17 00:00:00 2001 From: Laofan <545690097@qq.com> Date: Fri, 31 May 2024 05:54:56 +0000 Subject: [PATCH 03/11] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=20wo?= =?UTF-8?q?rk/com/java/minxi/java=5F20240524/java=5F2302=5F=E5=90=B4?= =?UTF-8?q?=E6=86=B6=E8=B1=AA=5F2244310224?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../jdbc1.java" | 35 ----------- .../jdbc2.java" | 38 ------------ .../jdbc3.java" | 60 ------------------- 3 files changed, 133 deletions(-) delete mode 100644 "work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc1.java" delete mode 100644 "work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc2.java" delete mode 100644 "work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc3.java" diff --git "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc1.java" "b/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc1.java" deleted file mode 100644 index 4cb0325..0000000 --- "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc1.java" +++ /dev/null @@ -1,35 +0,0 @@ -package com.java.minxi.java_20240524.java_2302_吴憶豪_2244310224; - -import java.sql.*; - -public class jdbc1 { - public static void main(String[] args) { - String url = "jdbc:mysql://locallhost:3306/root"; - String user = "username"; - String password = "password"; - - try { - Class.forName("com.java.minxi.java_20240524.java_2302_吴憶豪_2244310224.jdbc1.Driver"); - - System.out.println("link start"); - Connection conn = DriverManager.getConnection(url, user, password); - - System.out.println("select infomaion"); - Statement stmt = conn.createStatement(); - ResultSet rs = stmt.executeQuery("select id,teacher_name,teacher_age from users"); - - while (rs.next()) { - int id = rs.getInt("id"); - String teacher_name = rs.getString("name"); - System.out.println("id:" + id); - System.out.println("name:" + teacher_name); - } - rs.close(); - stmt.close(); - conn.close(); - } - catch(Exception e){ - e.printStackTrace(); - } - } -} diff --git "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc2.java" "b/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc2.java" deleted file mode 100644 index b935141..0000000 --- "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc2.java" +++ /dev/null @@ -1,38 +0,0 @@ -package com.java.minxi.java_20240524.java_2302_吴憶豪_2244310224; - -import java.sql.Connection; -import java.sql.DriverManager; -import java.sql.PreparedStatement; -import java.sql.ResultSet; - -public class jdbc2 { - public static void main(String[] args) { - String url = "jdbc:mysql://localhost:3306/root"; - String user = "username"; - String password = "password"; - - String sql = "select * from users where id = ? and age = ?"; - try { - Class.forName("com.mysql.cj.jdbc.Driver"); - Connection conn = DriverManager.getConnection(url, user, password); - PreparedStatement pstmt = conn.prepareStatement(sql); - pstmt.setInt(1, 1); - pstmt.setInt(2, 35); - ResultSet rs = pstmt.executeQuery(); - while (rs.next()) { - int id = rs.getInt("id"); - String name = rs.getString("teacher_name"); - int age = rs.getInt("teacher_age"); - System.out.println("id:" + id + ",name:" + name + ",age" + age); - } - rs.close(); - pstmt.close(); - conn.close(); - } - catch (Exception e){ - e.printStackTrace(); - - } - } - } - diff --git "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc3.java" "b/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc3.java" deleted file mode 100644 index 908971d..0000000 --- "a/work/com/java/minxi/java_20240524/java_2302_\345\220\264\346\206\266\350\261\252_2244310224/jdbc3.java" +++ /dev/null @@ -1,60 +0,0 @@ -package com.java.minxi.java_20240524.java_2302_吴憶豪_2244310224; - -import java.io.File; -import java.io.InputStreamReader; -import java.nio.charset.StandardCharsets; -import java.nio.file.Files; -import java.sql.Connection; -import java.sql.PreparedStatement; -import java.util.HashMap; -import java.util.Map; -import java.util.Properties; - -public class jdbc3 { - public static void main(String[] args) { - Map druid = getConnectionData("druid"); - DruidDataSource dataSource = new DruidDataSource(); - dataSource.setUrl("jdbc:mysql://localhost:3306/root"); - dataSource.setUsername("username"); - dataSource.setPassword("password"); - dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver"); - - try { - Connection connection = dataSource.getConnection(); - String sql = "UPDATE users SET username = ? WHERE id = ?"; - PreparedStatement statement = connection.prepareStatement(sql); - statement.setString(1, "小严"); - statement.setInt(2, 3); - - int affectedRows = statement.executeUpdate(); - - statement.close(); - connection.close(); - - if (affectedRows > 0) { - System.out.println("true"); - } else { - System.out.println("false"); - } - }catch(Exception e){ - e.printStackTrace(); - } - } - public static Map getConnectionData(String fileName) { - Map map = new HashMap<>(); - try { - Properties properties = new Properties(); - String property = System.getProperty("user.dir"); - File file = new File(property + "\\" + fileName + ".properties"); - InputStreamReader inputStreamReader = new InputStreamReader(Files.newInputStream(file.toPath()), StandardCharsets.UTF_8); - properties.load(inputStreamReader); - for (Object o : properties.keySet()) { - String key = (String) o; - String value = properties.getProperty(key); - map.put(key, value); - } - } catch (Exception e) { - e.printStackTrace(); - } - return map; -} -- Gitee From 8fb3cd1957fb70faf28eac0fc20cfa2e1fb61443 Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Thu, 25 Apr 2024 21:27:10 +0800 Subject: [PATCH 04/11] =?UTF-8?q?feat:=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Logon.java" | 12 +++ .../Staff.java" | 77 +++++++++++++++++++ 2 files changed, 89 insertions(+) create mode 100644 "work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Logon.java" create mode 100644 "work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Staff.java" diff --git "a/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Logon.java" "b/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Logon.java" new file mode 100644 index 0000000..c1f782b --- /dev/null +++ "b/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Logon.java" @@ -0,0 +1,12 @@ +package com.java.minxi.java_20240425.java_2302_易志昀_2344310235; +public class Logon { + public static void main(String[] args) { + Staff staff=new Staff(); + staff.setPassword("123456"); + staff.setAccount("qaz13"); + staff.setId(1); + staff.register(); + staff.card(); + staff.out(); + } +} diff --git "a/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Staff.java" "b/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Staff.java" new file mode 100644 index 0000000..f84bf80 --- /dev/null +++ "b/work/com/java/minxi/java_20240425/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Staff.java" @@ -0,0 +1,77 @@ +package com.java.minxi.java_20240425.java_2302_易志昀_2344310235; +public class Staff { + private int id; + public int getId() { + return id; + } + + public void setId(int id) { + this.id = id; + } + private String account; + + public String getAccount() { + return account; + } + + public void setAccount(String account) { + this.account = account; + } + + private String password; + + public String getPassword() { + return password; + } + + public void setPassword(String password) { + this.password = password; + } + + private String name; + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + private int age; + public void setAge(int age) { + this.age = age; + } + + public int getAge() { + return age; + } + + public Staff(){ + } + public Staff(int id,String account,String password,String nmae,int age){ + + } + + public static void main(String[] args) { + + } + public void register() { + if (account.equals("qaz13")&&password== "123456"){ + System.out.println("登录成功"); + }else { + System.out.println("密码或账号错误，登录失败"); + } + } + + public void card(){ + if (id==1&&password=="123456"){ + System.out.println("打卡成功"); + }else{ + System.out.println("打卡失败"); + } + } + public void out(){ + System.out.println("退出成功"); + } +} -- Gitee From 9335659c0e59d5c150d5f65530951b62e8a72e18 Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Tue, 30 Apr 2024 18:01:29 +0800 Subject: [PATCH 05/11] =?UTF-8?q?feat:=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Person.java" | 31 +++++++++++++++++++ .../Sc.java" | 8 +++++ .../Student.java" | 18 +++++++++++ 3 files changed, 57 insertions(+) create mode 100644 "work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" create mode 100644 "work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sc.java" create mode 100644 "work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Student.java" diff --git "a/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" new file mode 100644 index 0000000..a66a359 --- /dev/null +++ "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" @@ -0,0 +1,31 @@ +package com.java.minxi.java_20240426.java_2302_易志昀_2344310235; + +public class Person{ + + public String name; + public int age; + public Person(String name, int age) { + this.name = name; + this.age = age; + } + + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public int getAge() { + return age; + } + + public void setAge(int age) { + this.age = age; + } + + + +} diff --git "a/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sc.java" "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sc.java" new file mode 100644 index 0000000..fbfa6da --- /dev/null +++ "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sc.java" @@ -0,0 +1,8 @@ +package com.java.minxi.java_20240426.java_2302_易志昀_2344310235; + +public class Sc {public static void main(String[] args) { + Student student = new Student("张三", 18); + student.setSchool("龙岩学院"); + student.intro(); +} +} diff --git "a/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Student.java" "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Student.java" new file mode 100644 index 0000000..7d991a2 --- /dev/null +++ "b/work/com/java/minxi/java_20240426/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Student.java" @@ -0,0 +1,18 @@ +package com.java.minxi.java_20240426.java_2302_易志昀_2344310235; + +public class Student extends Person{ + private String school; + + public Student(String name,int age) { + super(name,age); + } + + + public void setSchool(String school) { + this.school = school; + } + + public void intro(){ + System.out.println("姓名："+this.name+"，年龄："+this.age+"，学校："+this.school); + } +} -- Gitee From fe479e0c1c55ae295030d2042890cd845b0395fa Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Thu, 9 May 2024 19:23:04 +0800 Subject: [PATCH 06/11] =?UTF-8?q?feat:=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../AirPlane.java" | 10 ++++ .../Car.java" | 12 +++++ .../Main.java" | 29 ++++++++++ .../Vehicles.java" | 54 +++++++++++++++++++ 4 files changed, 105 insertions(+) create mode 100644 "work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/AirPlane.java" create mode 100644 "work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Car.java" create mode 100644 "work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" create mode 100644 "work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Vehicles.java" diff --git "a/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/AirPlane.java" "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/AirPlane.java" new file mode 100644 index 0000000..3b467dc --- /dev/null +++ "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/AirPlane.java" @@ -0,0 +1,10 @@ +package java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235; + +public class AirPlane extends Vehicles { + public void travel(){ + System.out.println("开着"+getColor()+getBrand()+getType()+"前往"+getPlace()+"旅游"); + } + public String combination(String color,String type){ + return color+type+"汽车"; + } +} diff --git "a/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Car.java" "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Car.java" new file mode 100644 index 0000000..5d8b2e5 --- /dev/null +++ "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Car.java" @@ -0,0 +1,12 @@ +package java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235; + +public class Car extends Vehicles { + + public void travel(){ +System.out.println("开着"+getColor()+getBrand()+getType()+"前往"+getPlace()+"旅游"); + } + public String combination(String color,String type){ + return color+type+"飞机"; + } + +} diff --git "a/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" new file mode 100644 index 0000000..e4b3529 --- /dev/null +++ "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" @@ -0,0 +1,29 @@ +package java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235; + +import java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235.AirPlane; +import java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235.Car; + +public class Main { + public static void main(String[] args) { + Car Car =new Car(); + Car Car1=new Car(); + Car1.setPlace("北京"); + Car.setPlace("东山岛"); + Car.setColor("白色"); + Car.setBrand("大众"); + Car1.setBrand("奔驰"); + Car.setType("汽车"); + Car.travel(); + Car1.travel(); + AirPlane AirPlane =new AirPlane(); + AirPlane AirPlane1 =new AirPlane(); + AirPlane.setPlace("大理"); + AirPlane1.setPlace("哈尔滨岛"); + AirPlane.setColor("蓝色"); + AirPlane.setBrand("波音客机"); + AirPlane1.setBrand("空客客机"); + AirPlane.setType("飞机"); + AirPlane.travel(); + AirPlane1.travel(); + } +} \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Vehicles.java" "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Vehicles.java" new file mode 100644 index 0000000..8ee59e3 --- /dev/null +++ "b/work/com/java/minxi/java_20240508/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Vehicles.java" @@ -0,0 +1,54 @@ +package java2302.work.com.java.minxi.java_20240508.java_2302_易志昀_2344310235; + +public class Vehicles { + String type; + String brand; + String color; + String place; + + + + public String getPlace() { + return place; + } + + public void setPlace(String place) { + this.place = place; + } + + public String getColor() { + return color; + } + + public void setColor(String color) { + this.color = color; + } + + public String getType() { + return type; + } + + public void setType(String type) { + this.type = type; + } + + public String getBrand() { + return brand; + } + + public void setBrand(String brand) { + this.brand = brand; + } + public Vehicles(){ + + } + public Vehicles(String place,String color,String brand,String type){ + this.color=color; + this.place=place; + this.brand=brand; + this.type=type; + } + public void travel(String place,String color,String brand,String type){ + System.out.println("开着"+color+brand+type+"前往"+place+"旅游"); + } +} -- Gitee From e0c2e67aa0ae3d05e30b86629623ed1776f8d71f Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Thu, 9 May 2024 19:29:47 +0800 Subject: [PATCH 07/11] =?UTF-8?q?feat:=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Bus.java" | 14 +++++++++++ .../ControlTemperature.java" | 5 ++++ .../Main.java" | 17 ++++++++++++++ .../MoneyFare.java" | 5 ++++ .../MotorVehicles.java" | 8 +++++++ .../Taxi.java" | 23 +++++++++++++++++++ 6 files changed, 72 insertions(+) create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bus.java" create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/ControlTemperature.java" create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MoneyFare.java" create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MotorVehicles.java" create mode 100644 "work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Taxi.java" diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bus.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bus.java" new file mode 100644 index 0000000..5edf00e --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bus.java" @@ -0,0 +1,14 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +public class Bus extends MotorVehicles implements MoneyFare { + + @Override + public void charge(String c) { + System.out.println("公共汽车:"+c+"元/张"+",不计算公里数"); + } + + @Override + public void brake(String s) { + System.out.println("公共汽车的刹车技术:"+s); + } +} diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/ControlTemperature.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/ControlTemperature.java" new file mode 100644 index 0000000..1b4f03c --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/ControlTemperature.java" @@ -0,0 +1,5 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +public interface ControlTemperature { + public void controlAirTemperature(String t); +} diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" new file mode 100644 index 0000000..546ede0 --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" @@ -0,0 +1,17 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +import java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235.Bus; + +public class Main { + public static void main(String[] args) { + +Bus bus=new Bus(); +bus.brake("气式"); +bus.charge("2"); +Taxi taxi=new Taxi(); +taxi.brake("油式"); +taxi.charge("1"); +taxi.controlAirTemperature("嵌入式空调"); + + } +} \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MoneyFare.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MoneyFare.java" new file mode 100644 index 0000000..e22e6a3 --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MoneyFare.java" @@ -0,0 +1,5 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +public interface MoneyFare { + public void charge(String c); +} diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MotorVehicles.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MotorVehicles.java" new file mode 100644 index 0000000..656f9cc --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MotorVehicles.java" @@ -0,0 +1,8 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +public abstract class MotorVehicles { + + abstract public void brake(String s); + + +} diff --git "a/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Taxi.java" "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Taxi.java" new file mode 100644 index 0000000..2e3df7a --- /dev/null +++ "b/work/com/java/minxi/java_20240509/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Taxi.java" @@ -0,0 +1,23 @@ +package java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235; + +import java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235.ControlTemperature; +import java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235.MoneyFare; +import java2302.work.com.java.minxi.java_20240509.java_2302_易志昀_2344310235.MotorVehicles; + +public class Taxi extends MotorVehicles implements MoneyFare, ControlTemperature { + + @Override + public void controlAirTemperature(String t) { + System.out.println("出租车安装了"+t); + } + + @Override + public void charge(String c) { + System.out.println("出租车："+c+"元/公里,"+"起步价"+3+"元/公里"); + } + + @Override + public void brake(String s) { + System.out.println("出租车使用的刹车技术："+s); + } +} -- Gitee From f5290fb92a6631e8d27e96610763d516c54280cd Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Wed, 15 May 2024 19:31:01 +0800 Subject: [PATCH 08/11] feat:zuoye --- .../Bbb.java" | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 "work/com/java/minxi/java_20240512/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bbb.java" diff --git "a/work/com/java/minxi/java_20240512/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bbb.java" "b/work/com/java/minxi/java_20240512/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bbb.java" new file mode 100644 index 0000000..b115cf7 --- /dev/null +++ "b/work/com/java/minxi/java_20240512/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Bbb.java" @@ -0,0 +1,70 @@ +package com.java.minxi.java_20240512.java_2302_易志昀_2344310235; +import java.util.ArrayList; +import java.util.Collections; +import java.util.LinkedList; +public class Bbb { + public static int search(LinkedList linkedList, int target) { + for (int i = 0; i < linkedList.size(); i++) { + if (linkedList.get(i).equals(target)) { + return i; // 找到目标，返回当前索引 + } + } + return -1; // 未找到目标，返回-1 + } + public static void main(String[] args) { + ArrayList PeopleName = new ArrayList<>(); + PeopleName.add ("小明"); + PeopleName.add ("中明"); + PeopleName.add ("大明"); + PeopleName.add ("小刚"); + PeopleName.add ("大刚"); + PeopleName.add(0,"Old"); + for (int i = 0; i figure=new LinkedList<>(); + figure.add(0); + figure.add(8); + figure.add(4); + figure.add(7); + figure.add(10); + figure.addLast(4); + figure.removeFirst(); + figure.set(0,42); + for (int i = 0; i Date: Wed, 22 May 2024 13:20:03 +0800 Subject: [PATCH 09/11] =?UTF-8?q?feat:=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../A.java" | 16 +++ .../B.java" | 29 +++++ .../DATE.java" | 52 ++++++++ .../Jsq.java" | 15 +++ .../MAXIN.java" | 20 +++ .../Main.java" | 6 + .../Person.java" | 26 ++++ .../Sda.java" | 17 +++ .../StringOperations.java" | 116 ++++++++++++++++++ 9 files changed, 297 insertions(+) create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/A.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/B.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/DATE.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Jsq.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MAXIN.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sda.java" create mode 100644 "work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/StringOperations.java" diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/A.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/A.java" new file mode 100644 index 0000000..c242a24 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/A.java" @@ -0,0 +1,16 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +public class A { + public static void main(String[] args) { + int maxValue = 100; // 用户指定的最大值，可以是任何正整数 + double randomNumber = getRandomNumberInRange(maxValue); + System.out.println("Generated random number between 0 and " + maxValue + ": " + randomNumber); + } + + private static double getRandomNumberInRange(int maxValue) { + if (maxValue <= 0) { + throw new IllegalArgumentException("Max value must be greater than 0"); + } + return Math.random() * maxValue; + } + +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/B.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/B.java" new file mode 100644 index 0000000..22c2035 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/B.java" @@ -0,0 +1,29 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +public class B { + + /** + * 计算整数数组的平均值 + * + * @param numbers 整数数组 + * @return 数组的平均值，如果数组为空则返回0 + */ + public static double calculateAverage(int[] numbers) { + if (numbers == null || numbers.length == 0) { + return 0; // 如果数组为空，返回0 + } + + int sum = 0; + for (int number : numbers) { + sum += number; // 计算数组元素的总和 + } + + return (double) sum / numbers.length; // 返回平均值 + } + + public static void main(String[] args) { + int[] array = {1, 2, 3, 4, 5}; // 示例数组 + double average = calculateAverage(array); + System.out.println("数组的平均值是: " + average); + } + +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/DATE.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/DATE.java" new file mode 100644 index 0000000..7a2989c --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/DATE.java" @@ -0,0 +1,52 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +import java.text.SimpleDateFormat; +import java.util.Date; + +public class DATE { + public static void main(String[] args) throws Exception { + // 1. 创建一个Date对象，表示当前时间 + Date currentDate = new Date(); + System.out.println("Current Date: " + currentDate); + + // 2. 获取Date对象的年份、月份、天数等 + int year = getYearMonthDay(currentDate)[0]; + int month = getYearMonthDay(currentDate)[1]; + int day = getYearMonthDay(currentDate)[2]; + System.out.println("Year: " + year + ", Month: " + month + ", Day: " + day); + + // 3. 格式化Date对象 + String formattedDate = formatDate(currentDate, "yyyy-MM-dd HH:mm:ss"); + System.out.println("Formatted Date: " + formattedDate); + + // 4. Date转字符串再转回Date + Date parsedDate = stringToDate(formattedDate, "yyyy-MM-dd HH:mm:ss"); + System.out.println("Parsed Date: " + parsedDate); + + // 5. 使用System类获得当前时间戳，转换成Date对象并打印 + long timestamp = System.currentTimeMillis(); + Date timestampDate = new Date(timestamp); + System.out.println("Timestamp Date: " + timestampDate); + String timestampFormatted = formatDate(timestampDate, "yyyy-MM-dd HH:mm:ss"); + System.out.println("Formatted Timestamp: " + timestampFormatted); + } + + // 2. 创建一个方法，接受一个Date对象作为参数，返回该日期的年份、月份和天数 + private static int[] getYearMonthDay(Date date) { + int year = date.getYear() + 1900; // Java's Date.getYear() returns years since 1900 + int month = date.getMonth() + 1; // Java's Date.getMonth() returns 0-11 + int day = date.getDate(); + return new int[]{year, month, day}; + } + + // 3. 使用SimpleDateFormat类将Date对象格式化为指定的日期格式字符串 + private static String formatDate(Date date, String pattern) { + SimpleDateFormat sdf = new SimpleDateFormat(pattern); + return sdf.format(date); + } + + // 4. 实现一个程序，将Date对象转换为字符串，然后将该字符串重新解析回Date对象 + private static Date stringToDate(String dateString, String pattern) throws Exception { + SimpleDateFormat sdf = new SimpleDateFormat(pattern); + return sdf.parse(dateString); + } +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Jsq.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Jsq.java" new file mode 100644 index 0000000..50fda59 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Jsq.java" @@ -0,0 +1,15 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +import java.util.Scanner; + +public class Jsq { + public static void main(String[] args) { + Scanner sr =new Scanner(System.in); + System.out.println("请输入数字"); + double abc= sr.nextDouble(); + if (abc>0){ + System.out.println("绝对值："+abc); + }if (abc<0){ + System.out.println("绝对值："+-1*abc); + } + } +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MAXIN.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MAXIN.java" new file mode 100644 index 0000000..4611cbb --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/MAXIN.java" @@ -0,0 +1,20 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +import java.util.Scanner; + +public class MAXIN { + public static void main(String[] args) { + int []cc=new int[3]; + Scanner CC=new Scanner(System.in); + System.out.println("请输入三个整数："); + for (int i = 0; i <=2; i++) { + cc[i]= CC.nextInt(); + int min= Math.min(cc[0],Math.min(cc[1],cc[2])); + int max= Math.max(cc[0],Math.max(cc[1],cc[2] ) ); +System.out.println(min); +System.out.println(max); + } + } + +} + + diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" new file mode 100644 index 0000000..28c27e1 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.java" @@ -0,0 +1,6 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +public class Main { + public static void main(String[] args) { + System.out.println("Hello world!"); + } +} \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" new file mode 100644 index 0000000..ef27f94 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Person.java" @@ -0,0 +1,26 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +public class Person { + private String name; + private int age; + + public Person(String name) { + this.name = name; + } + + public Person(int age) { + this.age = age; + } + + @Override + public String toString(){ + return "name="+name+"age+"+age; + } + public boolean equals(){ + if (name.equals(age)){ + equals(true); + }else { + equals(false); + } + + return equals();} +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sda.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sda.java" new file mode 100644 index 0000000..413a3d9 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sda.java" @@ -0,0 +1,17 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +import java.util.Scanner; +public class Sda { + + + public static void main(String[] args) { + Scanner scanner = new Scanner(System.in); + System.out.print("请输入一个浮点数："); + double number = scanner.nextDouble(); + + // 使用Math.round()方法进行四舍五入 + long roundedNumber = Math.round(number); + + System.out.println("四舍五入后的整数是：" + roundedNumber); + } + +} diff --git "a/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/StringOperations.java" "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/StringOperations.java" new file mode 100644 index 0000000..a39fafe --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/StringOperations.java" @@ -0,0 +1,116 @@ +package com.java.minxi.java_20240516.java_2302_易志昀_2344310235; +public class StringOperations { + + // 1. 连接两个字符串 + public static String concatStrings(String str1, String str2) { + return str1 + str2; + } + + // 2. 字符串长度 + public static int stringLength(String str) { + return str.length(); + } + + // 3. 字符串分割 + public static String[] splitString(String str, char delimiter) { + return str.split(Character.toString(delimiter)); + } + + // 4. 字符串反转 + public static String reverseString(String str) { + return new StringBuilder(str).reverse().toString(); + } + + // 5. 字符串大小写转换 + public static String convertCase(String str, boolean toUpperCase) { + return toUpperCase ? str.toUpperCase() : str.toLowerCase(); + } + + // 6. 字符串搜索 + public static boolean containsSubstring(String str, String subStr) { + return str.contains(subStr); + } + + // 7. 字符串替换 + public static String replaceCharacters(String str, char oldChar, char newChar) { + return str.replace(oldChar, newChar); + } + + // 8. 字符串修剪 + public static String trimString(String str) { + return str.trim(); + } + + // 9. 字符串比较 + public static boolean equalsIgnoreCase(String str1, String str2) { + return str1.equalsIgnoreCase(str2); + } + + // 10. 子串操作 + public static String substring(String str, int startIndex, int endIndex) { + return str.substring(startIndex, endIndex); + } + + // 12. 字符串结束符检查 + public static boolean endsWithSuffix(String str, String suffix) { + return str.endsWith(suffix); + } + + // 13. 字符串开始符检查 + public static boolean startsWithPrefix(String str, String prefix) { + return str.startsWith(prefix); + } + + // 14. 字符串中字符的出现次数 + public static int countOccurrences(String str, char target) { + int count = 0; + for (char c : str.toCharArray()) { + if (c == target) { + count++; + } + } + return count; + } + + // 16. 字符串与数字的转换 + public static double stringToDouble(String str) throws NumberFormatException { + return Double.parseDouble(str); + } + + public static String doubleToString(double num) { + return String.valueOf(num); + } + + // 20. StringBuilder拼接 + public static String appendStrings(String str1, String str2, String str3) { + StringBuilder sb = new StringBuilder(); + sb.append(str1).append(str2).append(str3); + return sb.toString(); + } + + public static void main(String[] args) { + // 示例调用 + System.out.println(concatStrings("Hello", " World")); + System.out.println(stringLength("Hello World")); + for (String word : splitString("one,two,three", ',')) { + System.out.println(word); + } + System.out.println(reverseString("Hello World")); + System.out.println(convertCase("Hello World", true)); + System.out.println(containsSubstring("Hello World", "World")); + System.out.println(replaceCharacters("Hello World", 'o', 'a')); + System.out.println(trimString(" Hello World ")); + System.out.println(equalsIgnoreCase("Hello World", "hello world")); + System.out.println(substring("Hello World", 6, 11)); + System.out.println(endsWithSuffix("Hello World", "World")); + System.out.println(startsWithPrefix("Hello World", "Hello")); + System.out.println(countOccurrences("Hello World", 'o')); + try { + System.out.println(stringToDouble("3.14")); + System.out.println(doubleToString(3.14)); + } catch (NumberFormatException e) { + e.printStackTrace(); + } + System.out.println(appendStrings("Hello", " ", "World")); + } +} \ No newline at end of file -- Gitee From 96a9c1b9a6932154f8237dcc61b7f3fc95dc44f4 Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Wed, 29 May 2024 10:59:37 +0800 Subject: [PATCH 10/11] =?UTF-8?q?feat:=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../SJK.java" | 77 +++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 "work/com/java/minxi/java_20240524/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/SJK.java" diff --git "a/work/com/java/minxi/java_20240524/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/SJK.java" "b/work/com/java/minxi/java_20240524/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/SJK.java" new file mode 100644 index 0000000..18e7ff0 --- /dev/null +++ "b/work/com/java/minxi/java_20240524/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/SJK.java" @@ -0,0 +1,77 @@ +package com.java.minxi.java_20240524.java_2302_易志昀_2344310235; +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.ResultSet; +import java.sql.Statement; + +public class SJK { + public class Main { + public static void main(String[] args) throws Exception{ + Main_1(); + Main_2(); + Main_3(); + } + + private static void Main_3() throws Exception{ + String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai"; + String username="root"; + String password="123456"; + Connection connection= DriverManager.getConnection(url,username,password); + String sql="update teacher_info set teacher_name='小严' where id=3;"; + Statement statement=connection.createStatement(); + int i=statement.executeUpdate(sql); + if (i>0){ + System.out.println("修改成功"); + }else{ + System.out.println("修改失败"); + } + statement.close(); + connection.close(); + } + private static void Main_2() throws Exception{ + String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai"; + String username="root"; + String password="123456"; + Connection connection= DriverManager.getConnection(url,username,password); + String sql="select* from teacher_info where id=1 && teacher_age=35"; + Statement statement= connection.createStatement(); + ResultSet resultSet=statement.executeQuery(sql); + System.out.println("id为1，且年龄为35岁的用户："); + System.out.println("id\t\t teacher_name\t teacher_age"); + while(resultSet.next()){ + int id=resultSet.getInt(1); + String name=resultSet.getString(2); + int age=resultSet.getInt(3); + System.out.println(id+"\t\t"+name+"\t\t\t"+age); + } + System.out.println(); + resultSet.close(); + statement.close(); + connection.close(); + } + + private static void Main_1() throws Exception{ + String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai"; + String username="root"; + String password="123456"; + Connection connection= DriverManager.getConnection(url,username,password); + String sql="select*from teacher_info ;"; + Statement statement=connection.createStatement(); + ResultSet resultSet=statement.executeQuery(sql); + System.out.println("所有用户信息"); + System.out.println("id\t\t teacher_name\t teacher_age"); + while (resultSet.next()){ + int id=resultSet.getInt("id"); + String name=resultSet.getNString("teacher_name"); + int age=resultSet.getInt("teacher_age"); + System.out.println(id+"\t\t"+name+"\t\t"+age); + } + System.out.println(); + resultSet.close(); + statement.close(); + connection.close(); + + } + } + +} -- Gitee From 974ab8cab422b61e9dcb6418df6cdd58076443ee Mon Sep 17 00:00:00 2001 From: yizhiyun <2094853677@qq.com> Date: Tue, 11 Jun 2024 19:35:58 +0800 Subject: [PATCH 11/11] feat:zuoye --- .../Sleep.jsp" | 40 +++++++++++++++++++ .../Dfen.jsp" | 27 +++++++++++++ .../Fen.jsp" | 30 ++++++++++++++ .../Main.jsp" | 33 +++++++++++++++ 4 files changed, 130 insertions(+) create mode 100644 "work/com/java/minxi/java_20240531/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sleep.jsp" create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Dfen.jsp" create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Fen.jsp" create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.jsp" diff --git "a/work/com/java/minxi/java_20240531/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sleep.jsp" "b/work/com/java/minxi/java_20240531/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sleep.jsp" new file mode 100644 index 0000000..e522919 --- /dev/null +++ "b/work/com/java/minxi/java_20240531/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Sleep.jsp" @@ -0,0 +1,40 @@ +<%-- + Created by IntelliJ IDEA. + User: Administrator + Date: 2024-06-11 + Time: 19:13 + To change this template use File | Settings | File Templates. +--%> +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + Title + + +<%! public class Animals{ + String sleep(int time){ + return "一只动物在睡觉"; + } +} %> +<%! public class Cat{ + String name; + int time; + String sleep(int time){ + return "一只汤姆猫睡觉睡了8个小时"; + } + +} %> +<% Animals animals =new Animals(); + Cat cat =new Cat(); + cat.name="汤姆猫"; + System.out.println(animals.sleep(0)); + System.out.println(cat.sleep(8)); +%> +<% for (int i = 1; i <=9 ; i++) { + for (int j = 1; j +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + Title + + +<% + String SideA = request.getParameter("SideA"); + double a = Double.parseDouble(SideA); + +%> +<%! public Double circle(Double a){ + return Math.PI*a*a; +}; +%> + +

三角形的面积为：

<%=circle(a)%> + + + diff --git "a/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Fen.jsp" "b/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Fen.jsp" new file mode 100644 index 0000000..5d5b2ac --- /dev/null +++ "b/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Fen.jsp" @@ -0,0 +1,30 @@ +<%-- + Created by IntelliJ IDEA. + User: Administrator + Date: 2024-06-11 + Time: 19:26 + To change this template use File | Settings | File Templates. +--%> +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + Title + + +<% + String SideB = request.getParameter("SideB"); + String SideC = request.getParameter("SideC"); + String SideD = request.getParameter("SideD"); + double b = Double.parseDouble(SideB); + double c = Double.parseDouble(SideC); + double d = Double.parseDouble(SideD); + +%> +<%! public Double ladder(Double b,Double c,Double d){ + return (b+c)*d/2; +}; +%> + +

梯形的面积为：

<%=ladder(b,c,d)%> + + diff --git "a/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.jsp" "b/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.jsp" new file mode 100644 index 0000000..e469a13 --- /dev/null +++ "b/work/com/java/minxi/java_20240605/java_2302_\346\230\223\345\277\227\346\230\200_2344310235/Main.jsp" @@ -0,0 +1,33 @@ +<%-- + Created by IntelliJ IDEA. + User: Administrator + Date: 2024-06-11 + Time: 19:26 + To change this template use File | Settings | File Templates. +--%> +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + Title + + +<% double a = 2; + double b = 3; + double c = 4; + double d = 5; +%> +

计算圆的面积

+
加载circle.jsp 计算半径<%=a%>圆的面积 + + + + +

计算梯形的面积

+
加载ladder.jsp 计算半径<%=b%>,<%=c%>,<%=d%>梯形的面积 + + + + + + + -- Gitee