hannoiwindow.java

《Java课程设计》第二版

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class HannoiWindow extends JFrame implements ActionListener{
   Tower tower=null;
   int amountOfDisc=3;
   char []towerName={'A','B','C'};
   JMenuBar bar;
   JMenu menuGrade;
   JMenuItem oneGradeItem,twoGradeItem,threeGradeItem;
   JButton renew=null;
   JButton autoButton=null; 
   JPanel center=new JPanel(); 
   HannoiWindow(){
      tower=new Tower(towerName);
      tower.setAmountOfDisc(amountOfDisc);
      tower.setMaxDiscWidth(120);
      tower.setMinDiscWidth(50);
      tower.setDiscHeight(16);
      tower.putDiscOnTower();
      add(tower,BorderLayout.CENTER);
      bar=new JMenuBar();
      menuGrade=new JMenu("选择级别");
      oneGradeItem=new JMenuItem("初级");
      twoGradeItem=new JMenuItem("中级");
      threeGradeItem=new JMenuItem("高级");
      menuGrade.add(oneGradeItem);
      menuGrade.add(twoGradeItem);
      menuGrade.add(threeGradeItem);
      bar.add(menuGrade);
      setJMenuBar(bar);
      oneGradeItem.addActionListener(this);
      twoGradeItem.addActionListener(this);
      threeGradeItem.addActionListener(this); 
      renew=new JButton("重新开始");
      renew.addActionListener(this);
      autoButton=new JButton("自动演示");
      autoButton.addActionListener(this);
      JPanel north=new JPanel();
      north.add(renew);
      north.add(autoButton); 
      String mess="将全部盘子从"+towerName[0]+"座搬运到"+towerName[1]+
                  "座或"+towerName[2]+"座";
      JLabel hintMess=new JLabel(mess,JLabel.CENTER);
      north.add(hintMess); 
      add(north,BorderLayout.NORTH);
      setResizable(false);    
      setVisible(true);
      setBounds(60,60,460,410);
      validate();
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
   }
   public void actionPerformed(ActionEvent e){
      if(e.getSource()==oneGradeItem){
         amountOfDisc=3;
         tower.setAmountOfDisc(amountOfDisc);
         tower.putDiscOnTower();
      }
      else if(e.getSource()==twoGradeItem){
         amountOfDisc=4;
         tower.setAmountOfDisc(amountOfDisc);
         tower.putDiscOnTower();
      }
      else if(e.getSource()==threeGradeItem){
         amountOfDisc=5;
         tower.setAmountOfDisc(amountOfDisc);
         tower.putDiscOnTower();
      }
      else if(e.getSource()==renew){
         tower.setAmountOfDisc(amountOfDisc);
         tower.putDiscOnTower();
      }
      else if(e.getSource()==autoButton){
         tower.setAmountOfDisc(amountOfDisc);
         tower.putDiscOnTower();
         int x=this.getBounds().x+this.getBounds().width;
         int y=this.getBounds().y;
         tower.getAutoMoveDisc().setLocation(x,y);
         tower.getAutoMoveDisc().setSize(280,this.getBounds().height);  
         tower.getAutoMoveDisc().setVisible(true);
      }
      validate();
   }
   public static void main(String args[]){
      new HannoiWindow();
   }
}