lambda表达式

@Test public void test() {

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text
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    sendMessage((name, Mr) -> {
        System.out.println("send message to email " + name + " " + Mr);
        return "success";
    });

}

private void sendMessage(Message message) {
    String msg = message.send("lihua" , "Mr");
    System.out.println(msg);
}

接口

` @FunctionalInterface public interface Message {

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public String send(String name,String Mr);

}`

定义：

1. 函数式接口:只有一个抽象方法的接口 Functional Interface
2. lambda表达式:Lambda Expressions
3. 抽象方法:Abstract Method

写法：

1. () -> {}
2. (参数) -> {方法体}

线程的实现

@Test public void test1(){ new Thread(()-> System.out.println("new Thread")).start(); }