day10-接口interface-私有方法的使用
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14
day10/src/com/inmind/interface_private04/Demo04.java
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14
day10/src/com/inmind/interface_private04/Demo04.java
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package com.inmind.interface_private04;
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/*
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JDK9中提供了私有方法的使用
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接口的私有方法定义和使用
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格式:
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private 返回值类型 私有方法名(参数列表){
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}
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作用:接口中私有方法的作用,是给接口中默认方法来调用的,也就是说私有方法是将默认方法中
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相同的内容抽取出来,同时静态方法也可以做相同的操作
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*/
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public class Demo04 {
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}
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58
day10/src/com/inmind/interface_private04/MyInterface.java
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day10/src/com/inmind/interface_private04/MyInterface.java
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package com.inmind.interface_private04;
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public interface MyInterface {
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//定义3个默认方法
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public default void methodD1(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodD4();
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}
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default void methodD2(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodD4();
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}
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default void methodD3(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodD4();
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}
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private void methodD4(){
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System.out.println("1");
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System.out.println("2");
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System.out.println("3");
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}
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private static void methodS4(){
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System.out.println("1");
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System.out.println("2");
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System.out.println("3");
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}
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//定义3个静态方法
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public static void methodS1(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodS4();
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}
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static void methodS2(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodS4();
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}
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static void methodS3(){
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/*System.out.println("1");
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System.out.println("2");
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System.out.println("3");*/
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methodS4();
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}
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}
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