From 2fa1c45be18aab332d8fea6376105401a930d318 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 17 Sep 2026 15:40:50 +0800
Subject: [PATCH] =?UTF-8?q?day04--=E6=96=B9=E6=B3=95=5F=E8=B0=83=E7=94=A8?=
 =?UTF-8?q?=E7=9A=84=E4=B8=89=E7=A7=8D=E6=96=B9=E5=BC=8F?=
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---
 day04/src/com/inmind/method01/Demo04.java | 39 +++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 day04/src/com/inmind/method01/Demo04.java

diff --git a/day04/src/com/inmind/method01/Demo04.java b/day04/src/com/inmind/method01/Demo04.java
new file mode 100644
index 0000000..f1d6fa8
--- /dev/null
+++ b/day04/src/com/inmind/method01/Demo04.java
@@ -0,0 +1,39 @@
+package com.inmind.method01;
+/*
+方法的三种调用方式：
+1.直接调用 : 方法名(参数列表)
+
+2.赋值调用：数据类型 变量名 = 方法名(参数列表)
+
+3.打印输出调用: System.out.println(方法名(参数列表));
+
+总结：直接调用可以调用任意方法，赋值和打印输出调用只能调用有返回值的方法。
+ */
+public class Demo04 {
+    public static void main(String[] args) {
+        //直接调用
+        isEqual(1, 2);
+        printN(3);
+
+        //赋值调用
+        boolean result = isEqual(1, 2);
+        //void v = printN(3);不能调用无返回值的方法
+
+        //打印输出调用
+        System.out.println(isEqual(1, 2));
+        //System.out.println(printN(3));不能打印无返回值的方法
+    }
+
+
+    //有返回值的方法
+    public static boolean isEqual(int a,int b) {
+        return  a==b;
+    }
+
+    //没有有返回值的方法
+    public static void printN(int n) {
+        for (int i = 0; i < n; i++) {
+            System.out.println("helloworld");
+        }
+    }
+}