Lambda表达式

public interface Runnable{
   public abstract void run(); 
 }

 1 package Thread;
 2 /*
 3 * 从1到5一步步简化
 4 *
 5 * */
 6 public class LambdaTest {
 7 
 8     //3 静态内部类
 9     static class Like2 implements ILike{
10         @Override
11         public void lambda() {
12             System.out.println("I like lambda2");
13         }
14     }
15 
16     public static void main(String[] args) {
17         ILike like=new Like();
18         like.lambda();
19 
20         like=new Like2();
21         like.lambda();
22 
23         //4局部内部类
24         class Like3 implements ILike{
25 
26             @Override
27             public void lambda() {
28                 System.out.println("I like lambda3");
29             }
30         }
31         like=new Like3();
32         like.lambda();
33 
34         //5 匿名内部类，没有类的名称，必须借助接口或父类
35         like=new ILike() {
36             @Override
37             public void lambda() {
38                 System.out.println("I like lambda4");
39             }
40         };
41         like.lambda();
42 
43         //6 用lambda简化
44         like=()->{
45             System.out.println("I like lambda5");
46         };
47         like.lambda();
48 
49     }
50 }
51 
52 //1，定义一个函数式接口
53 interface ILike{
54     void lambda();
55 }
56 //2 实现类
57 class Like implements ILike{
58     @Override
59     public void lambda() {
60         System.out.println("I like lambda");
61     }
62 }