给你一个1~1000的随机数请你猜，请输入你猜的数：

[java]代码库

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Chp13_2 extends JFrame{

	private JButton chongwan;
	private JTextField field;
	private JLabel label1,label2;
	private Container container;
	private int shuzi = (int)(Math.random()*1000+1);
	
	Chp13_2 (){
		
		super("猜数游戏");
		
		container = getContentPane();
		container.setLayout(new FlowLayout());
		
		label1 = new JLabel("给你一个1~1000的随机数请你猜，请输入你猜的数：");
		container.add(label1);
		
		field = new JTextField(20);
		field.addKeyListener(new KeyListener(){

			
			public void keyPressed(KeyEvent arg0) {		}
			
			public void keyReleased(KeyEvent arg0) {
				
				int shuru = Integer.parseInt(field.getText());
				if(shuru < shuzi ){
					container.setBackground(Color.BLUE);
					label2.setText("你猜小了！");
				}else if(shuru > shuzi){
					container.setBackground(Color.RED);
					label2.setText("你猜大了！");
				}else if(shuru == shuzi){
					container.setBackground(Color.WHITE);
				    label2.setText("你猜对了！");
				    field.setEditable(false);
				}								
			}
		
			public void keyTyped(KeyEvent arg0){		}
			
		});
		
		
		
		
		container.add(field);
		
		label2 = new JLabel("  ");
		container.add(label2);
		
		chongwan = new JButton("重玩");
		chongwan.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				
				shuzi = (int)(Math.random()*1000+1); 
				field.setEditable(true);
				
			}
			
			
		});
		
		
		container.add(chongwan);
		
		setSize(500,400);
		setVisible(true);
		
		
	}
	
	
	
	
	
	public static void main(String[] args) {
		
		Chp13_2 application = new Chp13_2();
		application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		
	}
	
}