lambda表达式
new Thread(()->System.out.println("多线程学习")).start();
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lambda表达式只能有一行代码的情况下才可以简化成一行,如果有多行,就需要用代码块
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必须是函数式接口接口(函数式接口就是只包含唯一一个抽象方法)
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多个参数可以去掉参数类型,要去掉就必须都去掉,然后变量名就必须要括号
package com.thread;
public class TestThread4 {
//3.静态内部类
static class Like2 implements Ilike{
@Override
public void lambda() {
System.out.println("I like study2");
}
}
public static void main(String[] args) {
Ilike like = new Like();
like.lambda();
like=new Like2();
like.lambda();
//4.局部内部类
class Like3 implements Ilike{
@Override
public void lambda() {
System.out.println("I like study3");
}
}
like=new Like3();
like.lambda();
//5.匿名内部类
like=new Ilike() {
@Override
public void lambda() {
System.out.println("I like study4");
}
};
like.lambda();
//6.lambda简化
like=() ->{
System.out.println("I like study5");
};
like.lambda();
}
}
//1.定义一个接口
interface Ilike{
void lambda();
}
//2.实现接口类
class Like implements Ilike{
@Override
public void lambda() {
System.out.println("I like study");
}
} -