/*
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 */

package deadlocktest;

/**
 *
 * @author Administrator
 */

 class Friend
   {
        private final String name;

        public Friend(String name)
        {
            this.name = name;
        }

        public String getName()
        {
            return this.name;
        }

        public synchronized void bow(Friend bower)
        {
            System.out.format("%s: %s has bowed to me!%n", this.name, bower.getName());
            bower.bowBack(this);
        }

        public synchronized void bowBack(Friend bower)
        {
            System.out.format("%s: %s has bowed back to me!%n", this.name, bower.getName());
        }
    }

public class Main
{
    public static void main(String[] args) 
    {
        final Friend alphonse = new Friend("Alphonse");
        final Friend gaston = new Friend("Gaston");
        new Thread(new Runnable() {
            public void run() { alphonse.bow(gaston); }
        }).start();


        new Thread(new Runnable() {
            public void run() { gaston.bow(alphonse); }
        }).start();
    }
}