diff --git a/java-base-projects-task/src/main/java/com/swpu/YangWei/Task1.java b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task1.java
new file mode 100644
index 0000000000000000000000000000000000000000..25bd28644afabb0ddbc060419e80639b5ee59ad1
--- /dev/null
+++ b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task1.java
@@ -0,0 +1,70 @@
+package com.swpu.YangWei;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author yangwei
+ * 这个类是被调用的类
+ * int
+ * String
+ * List
+ * Map
+ * Object
+ */
+public class Task1 {
+
+    /**
+     * 整型
+     */
+    public int intMethod(int a){
+        return  a;
+    }
+
+    /**
+     * 字符型
+     *
+     */
+    public String stringMethod(String a,String b){
+        return a+b;
+    }
+
+    /**
+     * list
+     */
+    public List<String> listMethod(){
+        List<String> list = new ArrayList<>();
+        list.add("flower");
+        return list;
+    }
+
+    /**
+     * map
+     */
+    public Map<String,Object> mapMethod(){
+        Map<String,Object> map = new HashMap<>();
+        map.put("apple","20$");
+        map.put("peach","10$");
+        return map;
+    }
+
+    /**
+     * 无参数
+     * 有返回值
+     */
+    public Object objectMethod(){
+        return "yangwei" ;
+    }
+
+    /**
+     * 有参数，有返回值
+     */
+    public Object objectMethod(String name){
+        var age = "20";
+        return name + " 的年龄是 " + age;
+
+    }
+
+}
diff --git a/java-base-projects-task/src/main/java/com/swpu/YangWei/Task2.java b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task2.java
new file mode 100644
index 0000000000000000000000000000000000000000..64e121954173313af2f9c0d6b04ec5c26e1949c4
--- /dev/null
+++ b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task2.java
@@ -0,0 +1,41 @@
+package com.swpu.YangWei;
+
+import java.lang.reflect.MalformedParameterizedTypeException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author yangwei
+ *
+ */
+public class Task2 {
+    /**
+     * 主函数
+     *
+     * @param args 参数
+     */
+    public static void main(String[] args) {
+        Task1 task1 = new Task1();
+        //整型 有返回值
+        var number = task1.intMethod(7);
+        System.out.println("通过Task1中的intMethod得出结果："+number);
+
+        //字符型 有返回值
+        var string = task1.stringMethod("成都", "国信安");
+        System.out.println(string);
+
+        //list  无参数，有返回值
+        List<String> list = task1.listMethod();
+        System.out.println(list);
+
+        //map 无参数，有返回值
+        Map<String, Object> map = task1.mapMethod();
+        System.out.println(map);
+
+        // Object的方法调用 有参数，有返回值
+        Object object = task1.objectMethod("yangwei");
+        System.out.println(object);
+    }
+}
+
diff --git a/java-base-projects-task/src/main/java/com/swpu/YangWei/Task3.java b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task3.java
new file mode 100644
index 0000000000000000000000000000000000000000..4ba80dd631ae8dcde3422b648fff2c3a60d47af0
--- /dev/null
+++ b/java-base-projects-task/src/main/java/com/swpu/YangWei/Task3.java
@@ -0,0 +1,26 @@
+package com.swpu.YangWei;
+
+/**
+ * @author yangwei
+ */
+public class Task3 {
+
+    /**
+     *
+     * @param a
+     * @return s
+     */
+    public static int GetNum(int a){
+
+        //利用Math获得随机数
+        var s = a + (int)(Math.random()*a);
+        return s;
+    }
+    public static void main(String[] args) {
+
+        //这里调用GetNum方法，然后7作为参数传入
+        var num = GetNum(7);
+        System.out.println("你的幸运数字是："+num);
+
+    }
+}