interrupt()、interrupted()和isInterrupted()的直观区别
interrupt()
形式上中断一个线程,不会去真正意义上的打断一个正在运行的线程,而是修改当前线程的中断状态码。同时,对于处于sleep()、wait()和join()阻塞下的线程,该方法会使当前线程抛出一个线程。
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| public class App { public static void main( String[] args ) { Thread thread = new Thread(()->{ while(true){ System.out.println(Thread.currentThread().getName() + " 依旧在运行"); }
}); thread.start(); thread.interrupt();jieguo } }
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运行结果如下:

isInterrupted()
该方法会返回线程的中断标志位。
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| public class App { public static void main( String[] args ) { Thread thread = new Thread(()->{ while(true){ }
}); thread.start(); System.out.println("中断前:" + thread.isInterrupted()); thread.interrupt(); System.out.println("中断后:" + thread.isInterrupted()); } }
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运行结果如下:调用某一个线程对象的isInterrupted()
方法会返回该线程的中断状态码。调用interrupt()
方法以后,会改变这个线程的中断状态码。

interrupted()
该方法会返回当前线程的中断标志位,同时会重置中断标志位。
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| public class App { public static void main( String[] args ) { Thread thread = new Thread(()->{ while(true){ if(Thread.interrupted()){ System.out.println("线程中断标志位为true"); } }
}); thread.start(); System.out.println("中断前:" + thread.isInterrupted()); thread.interrupt(); System.out.println("中断后:" + thread.isInterrupted()); } }
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运行结果如下:
