mylift.java

面向对象语言设计电子教案

import java.awt.*;
import java.awt.event.*;
import java.lang.String.*;
class MyLift extends Thread implements  ActionListener 
 {
 	    TextField tf;
 	    TextField t;
     
     public void test()
     {
     	   
          Panel p1=new Panel();
          p1.setLayout(new FlowLayout());
         
         
        
         Panel p3=new Panel();
         tf=new TextField("1",5);
         t=new TextField(10);
         t.setEditable(false);
         tf.setEditable(false);
         p3.add(tf);
         p3.add(t);
         Panel p2=new Panel();
         p2.setLayout(new GridLayout(3,2));
         //创建按钮
		JButton Button1 = new JButton("一");
		JButton Button2 = new JButton("二");
		JButton Button3 = new JButton("三");
		JButton Button4 = new JButton("四");
		JButton Button5 = new JButton("五");
		JButton Button6 = new JButton("开");
		JButton Button7 = new JButton("关");
		
		
		//将按钮加入panel
		add(Button1);
		add(Button2);
		add(Button3);
		add(Button4);
		add(Button5);
		add(Button6);
		add(Button7);
		
		//创建监听器
		ButtonAction ButtonAction1 = new ButtonAction("一");
		ButtonAction ButtonAction2 = new ButtonAction("二");
		ButtonAction ButtonAction3 = new ButtonAction("三");
		ButtonAction ButtonAction4 = new ButtonAction("四");
		ButtonAction ButtonAction5 = new ButtonAction("五");
		ButtonAction ButtonAction6 = new ButtonAction("开");
		ButtonAction ButtonAction7 = new ButtonAction("关");
		
		//注册监听器
		Button1.addActionListener(ButtonAction1);
		Button2.addActionListener(ButtonAction2);
		Button3.addActionListener(ButtonAction3);
		Button4.addActionListener(ButtonAction4);
		Button5.addActionListener(ButtonAction5);
		Button6.addActionListener(ButtonAction6);
		Button7.addActionListener(ButtonAction7);

         Panel p5=new Panel();
         Frame f=new Frame("Mylift");
         f.add(p4);
         f.pack();
         f.setVisible(true);

     }
     public void windowClosing(ActionEvent e)
       {
          System.exit(0);	
       }
     public void actionPerformed(ActionEvent e)
     {
       
         String st1=toString((Button)e.getSource());
          String st2=tf.getText();
          int i=Integer.parseInt(st1);	
          int j=Integer.parseInt(st2);
          if(i<j)
          {
             for(;i<=j;j--)
             {
            tf.setText(String.valueOf(j));
             try{
            Thread.sleep(1000);
             }
             catch(Exception et)
              {}
             }	
          }
          else
          {
            for(;i>=j;j++)
            {
               tf.setText(String.valueOf(j));
               try{
             Thread.sleep(1000);}
              catch(Exception et)
              {}
               	
            }	
          }
        
     }
     public String toString(Button b)
     {
     			return b.getLabel();	
     }
     public static void main(String[] args)throws Exception
     {
       MyLift  Mylift=new MyLift();
       Mylift.test();	
     }
  }