java - day15 - nstInner

1 package com.javatest.mama;
2
3 public class Mama {
4     int x = 5;
5     public static void main(String[] args){
6         Mama t = new Mama();
7         t.say();
8         /* Baby m = new Baby(); */ //错误：No enclosing instance of type Mama is accessible
9                                    //main()是静态类，而内部类是动态类
10
11
12     }
13     void say(){
14         System.out.println("say()");
15         Baby x = new Baby();
16         x.show();
17     }
18
19     class Baby{
20         void show(){
21             System.out.println("show("+x+")");
22         }
23     }
24 }