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Java相关/What's New in JDK8/Lambda表达式.md
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@ -15,13 +15,13 @@ JDK8--Lambda表达式
**函数式接口指的是有且只有一个抽象(abstract)方法的接口**<br> **函数式接口指的是有且只有一个抽象(abstract)方法的接口**<br>
当需要一个函数式接口的对象时，就可以用Lambda表达式来实现，举个常用的例子: 当需要一个函数式接口的对象时，就可以用Lambda表达式来实现，举个常用的例子:
<br> <br>
``` ```java
Thread thread = new Thread(() -> { Thread thread = new Thread(() -> {
System.out.println("This is JDK8's Lambda!"); System.out.println("This is JDK8's Lambda!");
}); });
``` ```
这段代码和函数式接口有啥关系？我们回忆一下，Thread类的构造函数里是不是有一个以Runnable接口为参数的？ 这段代码和函数式接口有啥关系？我们回忆一下，Thread类的构造函数里是不是有一个以Runnable接口为参数的？
``` ```java
public Thread(Runnable target) {...} public Thread(Runnable target) {...}
/** /**
@ -33,7 +33,7 @@ public interface Runnable {
} }
``` ```
到这里大家可能已经明白了，**Lambda表达式相当于一个匿名类或者说是一个匿名方法**。上面Thread的例子相当于 到这里大家可能已经明白了，**Lambda表达式相当于一个匿名类或者说是一个匿名方法**。上面Thread的例子相当于
``` ```java
Thread thread = new Thread(new Runnable() { Thread thread = new Thread(new Runnable() {
@Override @Override
public void run() { public void run() {