JAVA 多线程1

package com.test;

public class ThreadTest
{

	/**
	 * @param args
	 */
	public static void main(String[] args)
	{
		final Utils ts = new Utils();
		new Thread(){
			@Override
			public void run()
			{
				for (int i = 0; i < 30; i++)
				{
					ts.sub(i);
				}
			}
		}.start();

		for (int i = 0; i < 30; i++)
		{
			ts.main(i);
		}
	}



}

class Utils{

	private boolean flag = true;

	public synchronized void main(int j){
		if(!flag){
			try
			{
				this.wait();
			}
			catch (InterruptedException e)
			{
				e.printStackTrace();
			}
		}
		for (int i = 1; i <= 5; i++)
		{
			System.out.println(j+":this's main"+i);
		}
		this.flag = false;
		this.notify();
	}

	public synchronized void sub(int j){
		if(flag){
			try
			{
				this.wait();
			}
			catch (InterruptedException e)
			{
				e.printStackTrace();
			}
		}
		for (int i = 1; i <= 10; i++)
		{
			System.out.println(j+":this's sub"+i);
		}
		this.flag = true;
		this.notifyAll();
	}
}