1.概述:是函数式编程思想的体现,主要注重干什么.

2.格式:

package com.ithema;
public class Test01 {
    public static void main(String[] args) {
        //匿名内部类
        swiming(new Swming() {
            @Override
            public void play() {
                System.out.println("游泳");
            }
        });
        //Lambda表达式
        swiming(() ->{
            System.out.println("去吧");
        });
    }
    //参数为接口的方法
    public static void swiming(Swming swming){
        swming.play();
    }
}
//接口类
interface Swming{
    public void play();
}