经典线程死锁

代码例子如下:

public class TestDeadLock implements Runnable

{

    public int flag = 1;

    static Object S1 = new Object(), S2=new Object();

    

    public void run()

    {

        System.out.println("flag="+flag);



        if(flag==1)

        {

            synchronized(S1)

            {

                try{

                    Thread.sleep(500);

                }

                catch(Exception e)

                {

                    e.printStackTrace();

                }

            }



                synchronized(S2)

                {

                    System.out.println("1");

                }

            } 

        }



        if(flag==0)

        {

            synchronized(S2)

            {

                try{

                    Thread.sleep(500);

                }

                catch(Exception e)

                {

                    e.printStackTrace();

                }

                synchronized(S1){

                System.out.println("0");

            }

        }

    }

}



public static void main(String[] args)

{

    TestDeadLock td1=new TestDeadLock();

    TestDeadLock td2=new TestDeadLock();

    td1.flag=1;

    td2.flag=0;

    Thread t1=new Thread(td1);

    Thread t2=new Thread(td2);

    t1.start();

    t2.start();

}

 

原文地址:

http://www.blogjava.net/Werther/archive/2009/03/12/259258.html