推导lambda表达式

package com.sean.base.threadStudy;

/**
 * 推导lambda表达式
 * @create 2021-02-27 14:17
 */
public class TestLambda1 {
    //3静态内部类
    static class Like2 implements ILike{
        @Override
        public void lambda() {
            System.out.println("i like lambda2");
        }
    }



    public static void main(String[] args) {
        ILike like = new Like();
        like.lambda();


        Like2 like2 = new Like2();
        like2.lambda();

        //4局部内部类
        class Like3 extends Like implements ILike{
            @Override
            public void lambda() {
                System.out.println("i like lambda3");
            }
        }

         like = new Like3();
         like.lambda();
        
        //5匿名内部类，没有类的名称，必须借助接口或者父类
         like = new ILike() {
             @Override
             public void lambda() {
                 System.out.println("i like lambda4");
             }
         };
        like.lambda();

        //6用lambda简化
        like = () ->
            System.out.println("i like lambda5");


        like.lambda();



    }
}
//1定义一个函数式接口
interface  ILike{
    void lambda();
}

//2实现类
class Like implements ILike{
    @Override
    public void lambda() {
        System.out.println("i like lambda");
    }
}