Java 实例 - 查看线程优先级

以下实例演示了如何使用 getThreadId() 方法获取线程id：

Main.java 文件

public   class   Main   extends   Object   {
    private   static   Runnable   makeRunnable ( )   {
       Runnable   r  =  new   Runnable ( )   {
          public   void   run ( )   {
             for   ( int   i  =  0 ;  i  <  5 ;  i ++ )   {
                Thread   t  =  Thread . currentThread ( ) ;
                System . out . println ( " in run() - priority= "
               +  t . getPriority ( ) +  " , name= "  +  t . getName ( ) ) ;
                try   {
                   Thread . sleep ( 2000 ) ;
                }
                catch   ( InterruptedException   x )   {
                }
             }
          }
       } ;
       return   r ;
    }
    public   static   void   main ( String [ ]   args )   {
       System . out . println ( " in main() - Thread.currentThread().getPriority()= "  +  Thread . currentThread ( ) . getPriority ( ) ) ;
       System . out . println ( " in main() - Thread.currentThread().getName()= " +  Thread . currentThread ( ) . getName ( ) ) ;
       Thread   threadA  =  new   Thread ( makeRunnable ( ) ,  " threadA " ) ;
       threadA . start ( ) ;
       try   {
          Thread . sleep ( 3000 ) ;
       }
       catch   ( InterruptedException   x )   {
       }
       System . out . println ( " in main() - threadA.getPriority()= " +  threadA . getPriority ( ) ) ;
    }
}

以上代码运行输出结果为：

in main() - Thread.currentThread().getPriority()=5

in main() - Thread.currentThread().getName()=main

in run() - priority=5, name=threadA

in run() - priority=5, name=threadA

in main() - threadA.getPriority()=5

in run() - priority=5, name=threadA

in run() - priority=5, name=threadA

in run() - priority=5, name=threadA

程序猿的技术大观园：www.javathinker.net

[这个贴子最后由 flybird 在 2020-01-27 16:42:53 重新编辑]

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