打字母游戏

package Example12_10;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
public class Example12_10 {
	public static void main(String args[]){
		WindowTyped win=new WindowTyped();
		win.setTitle("打字母游戏");
		win.setSleepTime(3000);
	}
}
class WindowTyped extends JFrame implements ActionListener,Runnable{
	JTextField inputLetter;
	Thread giveLetter;
	JLabel showLetter,showScore;
	int sleepTime,score;
	public void setSleepTime(int sleepTime){
		this.sleepTime=sleepTime;
	}
	WindowTyped(){
		setLayout(new FlowLayout());
		giveLetter=new Thread(this);
		inputLetter =new JTextField(6);
		showLetter=new JLabel(" ",JLabel.CENTER);
		showScore=new JLabel("分数:");
		showScore.setFont(new Font("宋体",Font.PLAIN,18));
		showScore.setForeground(Color.red);
		showLetter.setFont(new Font("Arial",Font.BOLD,22));
		showLetter.setForeground(Color.blue);
		add(new JLabel("显示字母:"));
		add(showLetter);
		add(new JLabel("输入所显示的字母(回车)"));
		add(inputLetter);
		add(showScore);
		inputLetter.addActionListener(this);
		setBounds(100,100,400,280);
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		giveLetter.start();
	}
	public void run(){
		while(true){
			int x=(int)(Math.random()*26)+0;//随机数
			showLetter.setText(""+(char)((char)x+'a')+"");
			validate();
			try{
				Thread.sleep(sleepTime);
			}
			catch(InterruptedException e){}
		}
	}
	public void actionPerformed(ActionEvent e){
		String s=showLetter.getText().trim();
		String letter=inputLetter.getText().trim();
		if(s.equals(letter)){
			score++;
			showScore.setText("得分"+score);
			inputLetter.setText(null);
			validate();
			giveLetter.interrupt();
		}
	}
}