diff --git a/day04/src/com/inmind/method01/Test02.java b/day04/src/com/inmind/method01/Test02.java
new file mode 100644
index 0000000..0afaba1
--- /dev/null
+++ b/day04/src/com/inmind/method01/Test02.java
@@ -0,0 +1,51 @@
+package com.inmind.method01;
+/*
+
+方法练习1_比较两个整数是否相同
+方法练习2_运算1到n的累和
+方法练习3_打印n遍HelloWorld.
+
+ */
+public class Test02 {
+    public static void main(String[] args) {
+        int a = 10;
+        int b = 10;
+        boolean result = isEqual(a,b);
+        System.out.println(result);
+
+        int sum = getSum(10);
+        System.out.println(sum);
+
+        print(10);
+    }
+
+    //方法练习3_打印n遍HelloWorld.
+    public static void print(int n){
+        for (int i = 0; i < n; i++) {
+            System.out.println("helloworld");
+        }
+    }
+
+    //方法练习2_运算1到n的累和
+    public static int getSum(int n){
+        int sum = 0;
+        for (int i = 1; i <= n; i++) {
+//            sum = sum + i;
+            sum += i;
+        }
+
+        return sum;
+    }
+
+
+
+    //方法练习1_比较两个整数是否相同
+    public static boolean isEqual(int x, int y) {// 形参：x = a; y = b;
+        /*if (x == y) {
+            return true;
+        } else {
+            return false;
+        }*/
+        return x == y;
+    }
+}