1 package com.example; 2 interface A{ 3     public final String name = "xiaoyu"; 4     public abstract void tell(); 5  6 } 7  8 class People implements A{ 9 10     @Override11     public void tell() {12         System.out.print(name);13     }14 }15 16 public class MyClass {17     //1.接口里面全部是由全局常量和公共的抽象方法所组成18     public static void main(String[] args){19         People p = new People();20         p.tell();21     }22 }