我自己的测试内部类笔记

Posted 2020-08-27

 1 public class TestInnerClass {
 2     public static void main(String[] args) {
 3         System.out.println("测试成员内部类");
 4         // 测试成员内部类
 5         Outer outer = new Outer(0);
 6         outer.privateInnerGetI();
 7         Outer.PublicInner publicInner = outer.new PublicInner();
 8         publicInner.printI();
 9         System.out.println("测试局部内部类");
10         // 局部内部类
11         final int i = 0;
12         class A{
13             public void print(){
14                 System.out.println("AAA,i = "+i);
15             }
16         }
17         A a = new A();
18         a.print();
19         System.out.println("测试匿名内部类");
20         // 测试匿名内部类
21         Runnable runnable = new Runnable() {    
22             @Override
23             public void run() {
24                 // TODO Auto-generated method stub
25                 
26             }
27         };
28         Thread[] threads = new Thread[10];
29         for(int j = 0;j<10;j++){
30             threads[j] = new Thread(runnable);
31         }    
32         System.out.println("测试静态内部类");
33         // 测试静态内部类
34         Outer.staticInner os = new Outer.staticInner();
35         os.notStaticPrint();
36         Outer.staticInner.staticPrint();
37         
38     }
39 
40     
41 }
42 // 成员内部类
43 class Outer{
44     private int i;
45     public Outer(int id){
46         this.i = i;
47     }
48     public void privateInnerGetI(){
49         new PrivateInner().printI();
50     }
51     
52     class PublicInner{
53         private int i = 2;
54         public void printI(){
55             System.out.println(i);
56         }
57     }
58     class PrivateInner{
59         public void printI(){
60             System.out.println(i);
61         }
62     }
63     
64     // 测试静态内部类
65         private static final int m = 1;
66         static class staticInner{
67             public void notStaticPrint(){
68                 System.out.println("Outer.staticInner.notStaticPrint(),m = "+m);
69             }
70             public static void staticPrint(){
71                 System.out.println("Outer.staticInner.staticPrint()");
72             }
73         }
74     
75 }

代码参考地址：http://www.cnblogs.com/xrq730/p/4875907.html#undefined