/**
 * Description:
 * <br/>Copyright (C), 2008-2010, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
class A
{
    public synchronized void foo( B b )
	{
		System.out.println("當(dāng)前線程名: " + 
			Thread.currentThread().getName() + " 進(jìn)入了A實(shí)例的foo方法" );
		try
		{
			Thread.sleep(200);
		}
		catch (InterruptedException ex)
		{
			ex.printStackTrace();
		}
		System.out.println("當(dāng)前線程名: " + 
		Thread.currentThread().getName() + " 企圖調(diào)用B實(shí)例的last方法");
		b.last();
	}

	public synchronized void last()
	{
		System.out.println("進(jìn)入了A類的last方法內(nèi)部");
	}
}

class B
{
	public synchronized void bar( A a )
	{
		System.out.println("當(dāng)前線程名: "
			+ Thread.currentThread().getName() + " 進(jìn)入了B實(shí)例的bar方法" );
		try
		{
			Thread.sleep(200);
		}
		catch (InterruptedException ex)
		{
			ex.printStackTrace();
		}
		System.out.println("當(dāng)前線程名: " 
		+ Thread.currentThread().getName() + " 企圖調(diào)用A實(shí)例的last方法");
		a.last();
	}

	public synchronized void last()
	{
		System.out.println("進(jìn)入了B類的last方法內(nèi)部");
	}
}

public class DeadLock implements Runnable
{
	A a = new A();
	B b = new B();

	public void init()
	{
		Thread.currentThread().setName("主線程");
		//調(diào)用a對(duì)象的foo方法
		a.foo(b);
		System.out.println("進(jìn)入了主線程之后");
	}
	public void run()
	{
		Thread.currentThread().setName("副線程");
		//調(diào)用b對(duì)象的bar方法
		b.bar(a);
		System.out.println("進(jìn)入了副線程之后");
	}
	public static void main(String[] args)
	{
		DeadLock dl = new DeadLock();
		//以dl為target啟動(dòng)新線程
		new Thread(dl).start();
		//執(zhí)行init方法作為新線程
		dl.init();
	}
}