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From: =?UTF-8?q?=E8=94=A1=E5=98=89=E4=B9=90?= <3196825236@qq.com>
Date: Mon, 19 Dec 2022 11:57:15 +0800
Subject: [PATCH] =?UTF-8?q?=E7=AC=AC=E5=8D=81=E6=AC=A1=E4=BD=9C=E4=B8=9A?=
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+### **方法的定义和调用**
+
+**1**. **无参数方法定义和调用**
+
+定义格式：
+
+```java
+public static void 方法名 ( ) {
+// 方法体;
+}
+```
+
+
+
+范例：
+
+```java
+public static void method ( ) {
+// 方法体;
+}
+```
+
+
+
+调用格式：
+
+```java
+方法名();
+```
+
+
+
+范例：
+
+```java
+method();
+```
+
+
+
+注意：
+
+方法必须先定义，后调用，否则程序将报错
+
+
+
+###  作业
+
+```java
+// 定义一函数，用于求2个数字中的较大数，幷将其返回，这两个数字在函数中由用户输入
+public class D5 {
+    public static void main(String[] args) {
+        Scanner sc =new Scanner(System.in);
+        System.out.println("输入两个数");
+        double a1 =sc.nextDouble();
+        double a2 =sc.nextDouble();
+        System.out.println(max(a1,a2));
+    }
+    public static double max(double a, double b){
+        return a>b ? a:b;
+    }
+}
+```
+
+
+
+```java
+//  在主函数中从键盘接收X, Y , Z3个数，编写函数计算这3个数的“立方”和并返回计算结果：S=X3+Y3+Z3
+public class D6 {
+    public static void main(String[] args) {
+        Scanner sc =new Scanner(System.in);
+        System.out.println("输入3个数：");
+        double X =sc.nextDouble();
+        double Y =sc.nextDouble();
+        double Z =sc.nextDouble();
+        System.out.println(sum(X,Y,Z));
+    }
+    public static double sum(double X1,double Y1, double Z1){
+        return (X1*X1*X1+Y1*Y1*Y1+Z1*Z1*Z1);
+    }
+}
+```
+
-- 
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