diff --git "a/work/com/java/minxi/java_20240515/java_\346\235\216\345\260\221\350\275\251_2344310239/Set.java" "b/work/com/java/minxi/java_20240515/java_\346\235\216\345\260\221\350\275\251_2344310239/Set.java" new file mode 100644 index 0000000000000000000000000000000000000000..5a3cca318c53306f2844f2774550ecc162c74a57 --- /dev/null +++ "b/work/com/java/minxi/java_20240515/java_\346\235\216\345\260\221\350\275\251_2344310239/Set.java" @@ -0,0 +1,57 @@ +package java2302.work.com.java.minxi.java_20240515.java_李少轩_2344310239; + +import java.util.HashMap; +import java.util.HashSet; + +public class Set { + public static void main(String[] args) { + HashSet kk = new HashSet<>(); + HashSet gg = new HashSet<>(); + HashSet ll = new HashSet<>(); + + kk.add("q"); + kk.add("w"); + kk.add("e"); + kk.add("r"); + kk.add("t"); + + ll.add("p"); + + gg.add("i"); + + System.out.println("存在"+kk.contains("q")); + kk.remove("t"); + System.out.println("大小"+kk.size()); + for (String i : kk) { + System.out.println(i); + } + kk.toArray(); + + kk.clear(); + kk.addAll(gg); + kk.retainAll(ll);//交集 + + kk.clear(); + kk.addAll(gg); + kk.removeAll(ll);//差集 + + kk.clear(); + kk.addAll(gg); + kk.addAll(ll);//并集 + + HashMap mm = new HashMap(); + + mm.put(1,"o"); + mm.put(2,"o1"); + mm.put(3,"o2"); + + mm.containsKey("o"); + mm.remove(2); + System.out.println(mm.size()); + + + + + + } +} diff --git "a/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/C.java" "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/C.java" new file mode 100644 index 0000000000000000000000000000000000000000..368137133b33d329b39c6478549f70d0ad9c7d43 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/C.java" @@ -0,0 +1,57 @@ +package java2302.work.com.java.minxi.java_20240516.java_李少轩_2344310239; + +public class C { + public String name; + public String age; + + public C() { + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getAge() { + return age; + } + + public void setAge(String age) { + this.age = age; + } + + public C(String age, String name) { + this.age=age; + this.name=name; + } + @Override + public String toString(){ + String cy ="名字为:"+this.name+"年龄为:"+this.age; + return cy; + } + + + @Override + public boolean equals(Object cy1) { + if (cy1 == null) { + return false; + } + if (this == cy1) { + return true; + } + if (!(cy1 instanceof C)){ + return false; + } + C cy2 = (C) cy1; + return cy2.name.equals(this.name) && cy2.age==this.age; + } + + public static void main(String[] args) { + C person = new C("18","阿布"); + C person1= new C("18","阿布"); + System.out.println(person.equals(person1)); + } +} diff --git "a/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/II.java" "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/II.java" new file mode 100644 index 0000000000000000000000000000000000000000..bffb676bd8fce03065587a2d15dac7cff586b070 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/II.java" @@ -0,0 +1,5 @@ +package java2302.work.com.java.minxi.java_20240516.java_李少轩_2344310239; + +public class II { + +} diff --git "a/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/PP.java" "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/PP.java" new file mode 100644 index 0000000000000000000000000000000000000000..7aa18516371fd708588daeb41b30caa79775574f --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/PP.java" @@ -0,0 +1,29 @@ +package java2302.work.com.java.minxi.java_20240516.java_李少轩_2344310239; + +import java.util.Scanner; +public class PP { + public static void main(String[] args) { + Scanner scanner = new Scanner(System.in); + System.out.println("请输入你要输的数字"); + int nub = scanner.nextInt(); + System.out.println("绝对值是:"+Math.abs(nub)); + System.out.println("请输入三个数"); + int n1=scanner.nextInt(); + int n2= scanner.nextInt(); + int n3 = scanner.nextInt(); + int max; + max=Math.max(n1,Math.max(n3,n2)); + System.out.println("那么最大数为:"+max); + System.out.println("最小数为:"+Math.min(n1,Math.min(n2,n3))); + System.out.println("请再次输入一个数"); + float n4= scanner.nextFloat(); + System.out.println("四舍五入后为"+Math.round(n4)); + double ab; + ab=Math.random(); + System.out.println("随机生成的数为"+ab); + System.out.println("请输入你要乘的数"); + int n5 = scanner.nextInt(); + System.out.println(ab*n5); + + } +} diff --git "a/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/l.java" "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/l.java" new file mode 100644 index 0000000000000000000000000000000000000000..c06872e1b1ea978090e3a66a3bed9722e7231178 --- /dev/null +++ "b/work/com/java/minxi/java_20240516/java_\346\235\216\345\260\221\350\275\251_2344310239/l.java" @@ -0,0 +1,16 @@ +package java2302.work.com.java.minxi.java_20240516.java_李少轩_2344310239; + +import java.text.SimpleDateFormat; + +import java.util.l; +public class l { + public static void main(String[] args) { + l date = new l(); + l date1 = new l(); + System.out.println(date); + SimpleDateFormat sdf1 = new SimpleDateFormat("pppp-nn-dd HH:mm:ss"); + try{date1 = sdf1.parse("2024年5月22日21:10:00"); + }catch (Exception ignored){} + System.out.println(date1); + } +}