Java.lang ThreadGroup

1 Java.lang ThreadGroup介绍

java.lang.ThreadGroup 类表示一组线程。它也可以包括其它的线程组。线程组构成一棵树，除了初始线程组中的每个线程组都有一个父类。

2 Java.lang ThreadGroup声明

public class ThreadGroup
   extends Object
      implements Thread.UncaughtExceptionHandler

3 Java.lang ThreadGroup方法

4 Java.lang ThreadGroup案例

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
public class ThreadGroupDemo implements Runnable{  
    public void run() {  
          System.out.println(Thread.currentThread().getName());  
    }  
   public static void main(String[] args) {  
      ThreadGroupDemo runnable = new ThreadGroupDemo();  
          ThreadGroup tg1 = new ThreadGroup("Parent ThreadGroup");  
            
          Thread t1 = new Thread(tg1, runnable,"one");  
          t1.start();  
          Thread t2 = new Thread(tg1, runnable,"two");  
          t2.start();  
          Thread t3 = new Thread(tg1, runnable,"three");  
          t3.start();  
               
          System.out.println("Thread Group Name: "+tg1.getName());  
         tg1.list();  
  
    }  
   } 

输出结果为：

one
two
three
Thread Group Name: Parent ThreadGroup
java.lang.ThreadGroup[name=Parent ThreadGroup,maxpri=10]
    Thread[one,5,Parent ThreadGroup]
    Thread[two,5,Parent ThreadGroup]
    Thread[three,5,Parent ThreadGroup]