import?java.awt.GridLayout;
import?java.awt.Menu;
import?java.awt.MenuBar;
import?java.awt.MenuItem;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;

import?javax.swing.*;

class?Monitor{
	public?int?philStates[]=new?int[5];????????????//0=thinking1=hungry2=eating
	public?boolean?chopsticks[]=new?boolean[5];???//true=usefalse=free
	public?deadlock?dp;???????????????????????????//used?to?change?the?icon
	public?Monitor（deadlock?dp）{
		this.dp=dp;
		int?i;
		for（i=0;i<5;i++）{
			philStates[i]=0;
			chopsticks[i]=false;
		}
	}
	public?synchronized?void?pickupL（int?i）{
		while（chopsticks[i]）{
			try{wait（）;}catch（InterruptedException?e）{}
		}
		chopsticks[i]=true;
		philStates[i]=1;
		dp.jl[i].setIcon（dp.pic[philStates[i]]）;
		dp.jl[i].setText（“I?am?hungry..“）;
	}
	public?synchronized?void?pickupR（int?i）{
		while（chopsticks[（i+1）%5]）{
			try{wait（）;}catch（InterruptedException?e）{}
		}
		chopsticks[（i+1）%5]=true;
		philStates[i]=2;
		dp.jl[i].setIcon（dp.pic[philStates[i]]）;
		dp.jl[i].setText（“eating?now..“）;
	}
	public?synchronized?void?putdown（int?i）{
		chopsticks[i]=false;
		chopsticks[（i+1）%5]=false;
		philStates[i]=0;
		dp.jl[i].setIcon（dp.pic[philStates[i]]）;
		dp.jl[i].setText（“thinking...“）;
		notify（）;		
	}
}
public?class?deadlock?extends?Jframe{
	/*for?conveniencethe?member?varables?are?declared?public*/
	public?JLabel?jl[]=new?JLabel[5];
	public?String[]?name={“philosopher1““philosopher2““philosopher3““philosopher4““philosopher5“};
	public?ImageIcon?pic[]=new?ImageIcon[3];
	public?Monitor?m;
	public?philosopher?phil[];
	public?deadlock（）{
		super（“Diner?Philosopher?Homework“）;
		/*init?the?image?resource*/
		pic[0]=new?ImageIcon（getClass（）.getResource（“images/think.jpg“））;
		pic[1]=new?ImageIcon（getClass（）.getResource（“images/hungry.jpg“））;
		pic[2]=new?ImageIcon（getClass（）.getResource（“images/eat.jpg“））;
		/*init?the?philosophers?status*/
		for（int?i=0;i<5;i++）{
			jl[i]=new?JLabel（name[i]pic[0]JLabel.CENTER）;
			jl[i].setVerticalTextPosition（JLabel.BOTTOM）;
			jl[i].setHorizontalTextPosition（JLabel.CENTER）;
		}
		/*init?the?window?size?and?location*/
		setSize（600?500）;
		setLocationRelativeTo（null）;
		setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;
		
		m=new?Monitor（this）;
		phil=new?philosopher[5];
		for（int?i=0;i<5;i++）phil[i]=new?philosopher（im）;
		/*add?some?menus*/
		MenuBar?mb=new?MenuBar（）;
		Menu?menu1=new?Menu（“Start/Stop“）;
		MenuItem?mi1=new?MenuItem（“Stop“）;
		mi1.addActionListener（new?ActionListener（）{
			public?void?actionPerformed（ActionEvent?e）{		
				for（int?i=0;i<5;i++）deadlock.this.phil[i].interrupt（）;
			}
		}）;
		MenuItem?mi2=new?MenuItem（“Start“）;
		mi2.addActionListener（new?ActionListener（）{
			public?void?actionPerformed（ActionEvent?e）{		
				for（int?i=0;i<5;i++）deadlock.this.phil[i].start（）;
			}
		}）;
		MenuItem?mi3=new?MenuItem（“Exit“）;
		mi3.addActionListener（new?ActionListener（）{
			public?void?actionPerformed（ActionEvent?e）{		
				System.exit（0）;
			}
		}）;
		menu1.add（

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-12-01?14:55??philosopher\
?????文件??????915372??2011-12-01?14:52??philosopher\philosopher.pdf
?????目錄???????????0??2011-12-01?17:47??philosopher\src\
?????文件????????4536??2011-11-29?19:04??philosopher\src\deadlock.java
?????文件?????????635??2011-12-01?17:47??philosopher\src\DinersPhilosopher$1.class
?????文件?????????631??2011-12-01?17:47??philosopher\src\DinersPhilosopher$2.class
?????文件?????????556??2011-12-01?17:47??philosopher\src\DinersPhilosopher$3.class
?????文件?????????695??2011-12-01?17:47??philosopher\src\DinersPhilosopher$4.class
?????文件????????3005??2011-12-01?17:47??philosopher\src\DinersPhilosopher.class
?????文件????????4355??2011-11-29?19:04??philosopher\src\DinersPhilosopher.java
?????目錄???????????0??2011-11-29?19:04??philosopher\src\images\
?????文件????????2317??2011-11-29?19:04??philosopher\src\images\desktop.jpg
?????文件???????12584??2011-11-29?19:04??philosopher\src\images\eat.jpg
?????文件???????12871??2011-11-29?19:04??philosopher\src\images\hungry.jpg
?????文件???????13396??2011-11-29?19:04??philosopher\src\images\think.jpg
?????文件????????1214??2011-12-01?17:47??philosopher\src\Monitor.class
?????文件?????????652??2011-12-01?17:47??philosopher\src\philosopher.class