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Java線(xiàn)程操作的常見(jiàn)方法【線(xiàn)程名稱(chēng)獲取、設(shè)置、線(xiàn)程啟動(dòng)判斷等】

更新時(shí)間：2019年10月15日 09:22:28 作者：cakincqm

這篇文章主要介紹了Java線(xiàn)程操作的常見(jiàn)方法,結(jié)合實(shí)例形式總結(jié)分析了java線(xiàn)程的創(chuàng)建、線(xiàn)程名稱(chēng)的獲取、設(shè)置以及線(xiàn)程啟動(dòng)的判斷等相關(guān)操作實(shí)現(xiàn)技巧,需要的朋友可以參考下

本文實(shí)例講述了Java線(xiàn)程操作的常見(jiàn)方法。分享給大家供大家參考，具體如下：

一線(xiàn)程名稱(chēng)的操作

1 代碼

public class GetNameThreadDemo extends Thread
{
  public void run()
  {
   for( int i = 0; i < 5; ++i )
   {
     printMsg();
     try
     {
      Thread.sleep(1000);    // 睡眠1秒
     }
     catch( InterruptedException e )
     {
      e.printStackTrace();
     }
   }
  }
  public void printMsg()
  {
   // 獲得運(yùn)行此代碼的線(xiàn)程的引用
   Thread t = Thread.currentThread();
   String name = t.getName();
   System.out.println( "name = " + name );
  }
  public static void main( String[] args )
  {
   GetNameThreadDemo t1 = new GetNameThreadDemo();
   t1.start();
   for( int i = 0; i < 5; ++i )
   {
     t1.printMsg();
     try
     {
      Thread.sleep(1000);    // 睡眠1秒
     }
     catch( InterruptedException e )
     {
      e.printStackTrace();
     }
   }
  }
}

2 運(yùn)行

name = main
name = Thread-0
name = main
name = Thread-0
name = main
name = Thread-0
name = main
name = Thread-0
name = main
name = Thread-0

二設(shè)置與獲取線(xiàn)程名稱(chēng)

1 代碼

public class GetSetNameThreadDemo implements Runnable
{
  public void run( )
  {
    Thread temp = Thread.currentThread( );//獲取執(zhí)行這條語(yǔ)句的線(xiàn)程實(shí)例
    System.out.println("執(zhí)行這條語(yǔ)句的線(xiàn)程名字:" + temp.getName( ));
  }
  public static void main(String[] args)
  {
    Thread t = new Thread(new GetSetNameThreadDemo( ));
    t.setName("線(xiàn)程_范例演示");
    t.start();
  }
}

2 運(yùn)行

執(zhí)行這條語(yǔ)句的線(xiàn)程名字:線(xiàn)程_范例演示

三判斷線(xiàn)程是否啟動(dòng)

1 代碼

public class StartThreadDemo extends Thread
{
  public void run()
  {
   for( int i = 0; i < 5; ++i )
   {
     printMsg();
   }
  }
  public void printMsg()
  {
   // 獲得運(yùn)行此代碼的線(xiàn)程的引用
   Thread t = Thread.currentThread();
   String name = t.getName();
   System.out.println( "name = " + name );
  }
  public static void main( String[] args )
  {
   StartThreadDemo t = new StartThreadDemo();
   t.setName( "test Thread" );
   System.out.println( "調(diào)用start()方法之前 , t.isAlive() = " + t.isAlive() );
   t.start();
   System.out.println( "剛調(diào)用start()方法時(shí) , t.isAlive() = " + t.isAlive() );
   for( int i = 0; i < 5; ++i )
   {
     t.printMsg();
   }
   // 下面語(yǔ)句的輸出結(jié)果是不固定的，有時(shí)輸出false，有時(shí)輸出true
   System.out.println( "main()方法結(jié)束時(shí) , t.isAlive() = " + t.isAlive() );
  }
}

2 運(yùn)行

調(diào)用start()方法之前 , t.isAlive() = false
剛調(diào)用start()方法時(shí) , t.isAlive() = true
name = main
name = main
name = main
name = test Thread
name = main
name = test Thread
name = main
name = test Thread
main()方法結(jié)束時(shí) , t.isAlive() = true
name = test Thread
name = test Thread

Process finished with exit code 0