groupdemo.java

Java网络编程与分布式计算, 主要分析java网络各方面的编程, 提供许多实用安全

// Chapter 7, Listing 10
public class GroupDemo implements Runnable
{
	public static void main(String args[]) throws Exception
	{
		// Create a thread group
		ThreadGroup parent = new ThreadGroup("parent");

		// Create a group that is a child of another thread group
		ThreadGroup subgroup = new ThreadGroup(parent, "subgroup");

		// Create some threads in the parent, and subgroup class
		Thread t1 = new Thread ( parent, new GroupDemo() );
		t1.start();
		Thread t2 = new Thread ( parent, new GroupDemo() );
		t2.start();
		Thread t3 = new Thread ( subgroup, new GroupDemo() );
		t3.start();

		// Dump the contents of the group to System.out
		parent.list();


		// Wait for user, then terminate
		System.out.println ("Press enter to continue");
		System.in.read();
		System.exit(0);
	}

	public void run()
	{
		// Do nothing
		for(;;)
		{
			Thread.yield();
		}
	}
}