Java哲学家就餐问题代码演示.rar

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.ImageIcon; ////////////////////////////////////////////////// //筷子类 class Bamboo { boolean bState; //互斥信号量 JLabel bLabel; //显示筷子的JLabel ImageIcon emptyImage,bambooImage; //被用时为empty图片，否则为筷子图片 public Bamboo(JLabel bLabel, ImageIcon image) { emptyImage=new ImageIcon("空的.jpg"); this.bLabel=bLabel; this.bambooImage=image; bState=true; //一开始都设筷子为可用状态 } public synchronized void gainBamboo() { while(!bState) { //如果此筷子已被用，则等待 try { wait(); }catch(Exception e) { e.printStackTrace(); } } bLabel.setIcon(emptyImage); //获得筷子，并把筷子所代表 的图片设为空 bState=false; //把此筷子的状态设为已被用了 } public synchronized void takeBamboo() { //放下筷子，把筷子状态设为可用 bState=true; bLabel.setIcon(bambooImage); notify(); //唤醒其他在等待的线程，如果有等待此筷子的线程，则可以继续判断 } } ////////////////////////////////////////////////////////// //哲学家类， class Zexuejia extends Thread { int thinkSpeed, eatSpeed; // 思考，吃饭的时间 Bamboo left, right; // 哲学家的左右筷子 int num; // 第几号哲学家 JLabel zxjLable, leftLable, rightLable, zxjLeftLabel, zxjRightLabel; // zxjLable为哲学家设置状态的， // leftLable,rightLable,为哲学家的左右两根， // zxjLeftLabel,zxjRightLabel为哲学家拿起两筷子后的 ImageIcon leftImage, rightImage; //左右两个筷子的图片 Zexuejia(int num, JLabel zLabel, Bamboo left, JLabel lLabel, Bamboo right, // 哲学家构造函数 JLabel rLabel, ImageIcon lImage, ImageIcon rImage, JLabel zLLabel, JLabel zRLabel) { this.num = num; this.zxjLable = zLabel; this.left = left; this.leftLable = lLabel; this.right = right; this.rightLable = rLabel; this.leftImage = lImage; this.rightImage = rImage; this.zxjRightLabel = zRLabel; this.zxjLeftLabel = zLLabel; } public void run() { ImageIcon thinkImage = new ImageIcon("thinking.gif"); ImageIcon huangryImage = new ImageIcon("huangry.gif"); ImageIcon eatImage = new ImageIcon("eating.gif"); ImageIcon empty = new ImageIcon("empty.jpg"); while (true) { zxjLable.setIcon(thinkImage); do { thinkSpeed = (int) (Math.random() * 10000); // 获得随机的思考时间 } while (thinkSpeed < 1500); try { sleep(thinkSpeed); // 以线程睡眠的方式让哲学家思考一些时间 } catch (Exception e) { } zxjLable.setIcon(huangryImage); left.gainBamboo(); // 获得左边的筷子 zxjLeftLabel.setIcon(leftImage); right.gainBamboo(); // 获得右边的筷子 zxjRightLabel.setIcon(rightImage); zxjLable.setIcon(eatImage); do { eatSpeed = (int) (Math.random() * 10000); // 获得随机的吃饭时间 } while (eatSpeed < 1500); try { sleep(eatSpeed); // 以线程睡眠的方式让哲学家吃饭一些时间 } catch (Exception e) { } synchronized (left) { left.takeBamboo(); // 放下左边的筷子 zxjLeftLabel.setIcon(empty); } synchronized (right) { right.takeBamboo(); // 放下右边的筷子 zxjRightLabel.setIcon(empty); } } } } public class ZxjFrame extends JFrame implements ActionListener { JButton start_Button,end_Button; JLabel bambooLabel[]; JLabel h[]; JLabel zxjLable[]; Bamboo bamboo[]; // 筷子对象数组 Zexuejia zxj[]; // 哲学家对象数组 ImageIcon bambooImage[],empty,thinkImage,huangryImage,eatImage; ZxjFrame() { // 构造函数 super("---经典哲学家就餐问题模拟---周辉强－－3105007364－－软件工程（3）班----"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container ct=this.getContentPane(); ct.setBackground(java.awt.Color.WHITE); thinkImage=new ImageIcon("thinking.gif"); huangryImage=new ImageIcon("huangry.gif"); eatImage=new ImageIcon("eating.gif"); empty=new ImageIcon("空的.gif"); JPanel panel=new JPanel(); panel.setLayout(new FlowLayout()); zxjLable=new JLabel[6]; for(int i=1;i<=5;i++) { zxjLable[i]=new JLabel(); zxjLable[i].setIcon(thinkImage); //一开始设为思考 } bambooImage=new ImageIcon[6]; bambooImage[1]=new ImageIcon("bamboo.gif"); bambooImage[2]=new ImageIcon("bamboo.gif"); bambooImage[3]=new ImageIcon("bamboo.gif"); bambooImage[4]=new ImageIcon("bamboo.gif"); bambooImage[5]=new ImageIcon("bamboo.gif"); bambooLabel=new JLabel[6]; bambooLabel[1]=new JLabel(); bambooLabel[1].setIcon(bambooImage[1]); bambooLabel[2]=new JLabel(); bambooLabel[2].setIcon(bambooImage[2]); bambooLabel[3]=new JLabel(); bambooLabel[3].setIcon(bambooImage[3]); bambooLabel[4]=new JLabel(); bambooLabel[4].setIcon(bambooImage[4]); bambooLabel[5]=new JLabel(); bambooLabel[5].setIcon(bambooImage[5]); bamboo=new Bamboo[6]; for(int i=1;i<=5;i++) bamboo[i]=new Bamboo(bambooLabel[i],bambooImage[i]); //筷子对象的初始化 h=new JLabel[13]; for(int i=1;i<=12;i++) { h[i]=new JLabel(); h[i].setIcon(empty); } zxj=new Zexuejia[6]; panel=new JPanel(); panel.setLayout(new GridBagLayout()); //GridBagLayout 类是一个灵活的布局管理器， //它不要求组件的大小相同即可将组件垂直和水平对齐。 //每个 GridBagLayout 对象维持一个动态的矩形单元网格， //每个组件占用一个或多个这样的单元，称为显示区域。 GridBagConstraints gbc=new GridBagConstraints(); //GridBagConstraints 类指定使用 GridBagLayout 类布置的组件的约束。 //详细见E盘api gbc.weightx=1; gbc.weighty=1; gbc.gridwidth=1; gbc.gridheight=1; gbc.gridy=0; gbc.gridx=4; panel.add(h[2],gbc); gbc.gridx=6; panel.add(h[1],gbc); gbc.gridy=1; gbc.gridx=5; panel.add(zxjLable[1],gbc); gbc.gridy=2; gbc.gridx=0; panel.add(h[3],gbc); gbc.gridx=3; panel.add(bambooLabel[1],gbc); gbc.gridx=7; panel.add(bambooLabel[5],gbc); gbc.gridx=10; panel.add(h[10],gbc); gbc.gridy=3; gbc.gridx=1; panel.add(zxjLable[2],gbc); gbc.gridx=9; panel.add(zxjLable[5],gbc); gbc.gridy=4; gbc.gridx=0; panel.add(h[4],gbc); gbc.gridx=10; panel.add(h[9],gbc); gbc.gridy=5; gbc.gridx=2; panel.add(bambooLabel[2],gbc); gbc.gridx=8; panel.add(bambooLabel[4],gbc); gbc.gridy=7; gbc.gridx=2; panel.add(h[5],gbc); gbc.gridx=3; panel.add(zxjLable[3],gbc); gbc.gridx=7; panel.add(zxjLable[4],gbc); gbc.gridx=8; panel.add(h[8],gbc); gbc.gridy=8; gbc.gridx=3; panel.add(h[6],gbc); gbc.gridx=5; panel.add(bambooLabel[3],gbc); gbc.gridx=7; panel.add(h[7],gbc); ct.add(panel,BorderLayout.CENTER); zxj[1]=new Zexuejia(1, zxjLable[1], bamboo[5], bambooLabel[5], bamboo[1], bambooLabel[1], bambooImage[5], bambooImage[1], h[1], h[2]); zxj[2]=new Zexuejia(2, zxjLable[2], bamboo[2], bambooLabe