interrupt,interrupted,isInterrupted三者区别【附例子】

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学了线程这么久, 一直没搞清楚这三者的区别,就在这里区别一下

1. interrupt

interrupt只是设置中断状态,并不会使程序暂停,会继续执行,如果需要显示地暂停程序,必须catch这个InterruptedException,那么捕捉到中断就不会继续程序了;

可以对指定线程调用.interrupt()方法;

以下测试代码说明catch后暂停程序

public class interruptThread {int count=1;public static void main(String[] args) throws Exception{// TODO Auto-generated method stub      Thread t=new Thread(new t1(),"a");      t.start();      t.interrupt();}}class t1  implements Runnable{@Overridepublic void run() {           try{Thread.sleep(100);           System.out.println("这里不被执行");           }catch(InterruptedException e){           System.out.println(Thread.currentThread().isInterrupted());           }  }}

2. interrupted

只能对当前线程调用,调用方法Thread.interrupted;

会清空原有的interrupt状态,例如在上段代码输出结果是false,因为interruptedException捕捉到后,将中断状态恢复了,这点区别于isInterrupted()

例子如下

public class interruptThread {int count=1;public static void main(String[] args) throws Exception{// TODO Auto-generated method stub      Thread t=new Thread(new t1(),"a");      t.start();      t.interrupt();}}class t1  implements Runnable{@Overridepublic void run() {           for(int i=0;i<1000;i++){           System.out.println(i);           System.out.println(Thread.currentThread().interrupted());           }  }}


3. isInterrupted

可以对指定线程调用;

不改变中断状态,和interrupted区别开来;

public class interruptThread {int count=1;public static void main(String[] args) throws Exception{// TODO Auto-generated method stub      Thread t=new Thread(new t1(),"a");      t.start();      t.interrupt();}}class t1  implements Runnable{@Overridepublic void run() {           for(int i=0;i<1000;i++){           System.out.println(i);           System.out.println(Thread.currentThread().isInterrupted());           }  }}



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