Java 实例 - 中断线程

以下实例演示了如何使用interrupt()方法来中断线程并使用 isInterrupted() 方法来判断线程是否已中断：

Main.java 文件

public   class   Main   extends   Object
implements   Runnable   {
    public   void   run ( )   {
       try   {
          System . out . println ( " in run() - 将运行 work2() 方法 " ) ;
          work2 ( ) ;
          System . out . println ( " in run() - 从 work2() 方法回来 " ) ;
       }
       catch   ( InterruptedException   x )   {
          System . out . println ( " in run() - 中断 work2() 方法 " ) ;
          return ;
       }
       System . out . println ( " in run() - 休眠后执行 " ) ;
       System . out . println ( " in run() - 正常离开 " ) ;
    }
    public   void   work2 ( )   throws   InterruptedException   {
       while   ( true )   {
          if   ( Thread . currentThread ( ) . isInterrupted ( ) )   {
             System . out . println ( " C isInterrupted()= "  +  Thread . currentThread ( ) . isInterrupted ( ) ) ;
             Thread . sleep ( 2000 ) ;
             System . out . println ( " D isInterrupted()= "  +  Thread . currentThread ( ) . isInterrupted ( ) ) ;
          }
       }
    }
    public   void   work ( )   throws   InterruptedException   {
       while   ( true )   {
          for   ( int   i  =  0 ;  i  <  100000 ;  i ++ )   {
             int   j  =  i  *  2 ;
          }
          System . out . println ( " A isInterrupted()= "  +  Thread . currentThread ( ) . isInterrupted ( ) ) ;
          if   ( Thread . interrupted ( ) )   {
             System . out . println ( " B isInterrupted()= "  +  Thread . currentThread ( ) . isInterrupted ( ) ) ;
             throw   new   InterruptedException ( ) ;
          }
       }
    }
    public   static   void   main ( String [ ]   args )   {
       Main   si  =  new   Main ( ) ;
       Thread   t  =  new   Thread ( si ) ;
       t . start ( ) ;
       try   {
          Thread . sleep ( 2000 ) ;
       }
       catch   ( InterruptedException   x )   {
       }
       System . out . println ( " in main() - 中断其他线程 " ) ;
       t . interrupt ( ) ;
       System . out . println ( " in main() - 离开 " ) ;
    }
}

以上代码运行输出结果为：

in run() - 将运行 work2() 方法

in main() - 中断其他线程

in main() - 离开

C isInterrupted()=true

in run() - 中断 work2() 方法

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[这个贴子最后由 flybird 在 2020-01-27 15:39:02 重新编辑]

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