多线程：lamba表达式

多线程是跟着狂神学的：
b站学习视频

package Thread;

// 匿名内部类
public class Demo {
    public static void main(String[] args) {
        Person p = (String food) -> {
            System.out.println("i eat " + food);
        };
        // 去掉参数声明
         p = (food) -> {
            System.out.println("i eat " + food);
        };

         // 只有一个入参的话，去掉括号
        p = food -> {
            System.out.println("i eat " + food);
        };
        // 去掉花括号
        p = food -> System.out.println("i eat " + food);

        Me me = (song, time) -> System.out.println(song + time);
        p.eat("rice");
    }
}

interface Person{
    void eat(String food);
}

interface Me{
    void sing(String song, int time);
}