class Draw extends JPanel
{
	int x=0;
	String s;
	int w,h;
	public void paint(Graphics g)
	{
		super.paint(g);
		this.setBackground(Color.WHITE);
		w=this.getWidth();
		h=this.getHeight();
		g.setColor(Color.BLACK);
		g.drawLine(66,h/2-44,666,h/2-44);
		g.drawLine(66,h/2+40,666,h/2+40);
		g.setColor(Color.BLACK);
		g.drawLine(66,0,66,h);
		g.setColor(Color.red);
		g.drawLine(666,0,666,h);
		g.drawRect(36+x,h/2-10,30,20);
		//馬的顯示
		g.setColor(Color.BLACK);
		//文字顯示
		g.drawString(s,26,h/2-12);
	}
}

public class Run extends JFrame implements ActionListener
{
	……
	JPanel p3;
	//投注區(qū)
	JButton jb;
	//開(kāi)始按鈕
	JFrame frame;
	DateUtil d1=new DateUtil();
	Boolean cotrol;
	//對(duì)投注額改變的變量
	int no;
	//名次編號(hào)
	String s;
	//投注單選事件的變量符號(hào)
	JRadioButton b1,b2,b3,b4;
	//投注的單選按鈕
	ButtonGroup bg;
	//按鈕注，使其為單選
	JTextArea ta;
	//賽馬的文字顯示
	JLabel money;
	//投注總金額標(biāo)簽
	TextField tf;
	//投注金額的輸入窗口
	int tz;
	//投注金額變化的變量
	String tfget;
	//投注總金額的中轉(zhuǎn)變量
	FlowLayout ly;
	//布局變量
}
public void actionPerformed(ActionEvent e)
{
	if(bg.getSelection()!=null)
	{
		//投注單選按鈕選擇確認(rèn)
		if(e.getActionCommand()=="開(kāi)始")
		{
			tfget=tf.getText();
			try{
				if(Integer.parseint(tfget)>0&&Integer.parseint(tfget)<=tz)//string轉(zhuǎn)換成int
				{
					//投注金額確認(rèn)
					ta.setText("比賽開(kāi)始了"+'n');
new racing(h1,this).start();
new racing(h2,this).start();
new racing(h3,this).start();
new racing(h4,this).start();
jb.setText("重新開(kāi)始");//賽馬按鍵標(biāo)簽改變
b1.setEnabled(false);//賽馬開(kāi)始后，禁止操作
b2.setEnabled(false);
b3.setEnabled(false);
b4.setEnabled(false);
tf.setEditable(false);
jb.setEnabled(false);
}
else
{
JOptionPane.showMessageDialog(null, "投注金額錯(cuò)誤，請(qǐng)重新投注");//信息對(duì)話(huà)框
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null, "投注格式錯(cuò)誤，請(qǐng)重新投注");
}
}
}
else
{
JOptionPane.showMessageDialog(null, "請(qǐng)選號(hào)確認(rèn)投注");
}

public void actionPerformed(ActionEvent e)
{
	……
	ta.setText("比賽開(kāi)始了"+'n');
new racing(h1,this).start();
new racing(h2,this).start();
new racing(h3,this).start();
new racing(h4,this).start();
jb.setText("重新開(kāi)始");//賽馬按鍵標(biāo)簽改變
b1.setEnabled(false);//賽馬開(kāi)始后，禁止操作
b2.setEnabled(false);
b3.setEnabled(false);
b4.setEnabled(false);
tf.setEditable(false);
jb.setEnabled(false);
}
……
if(e.getActionCommand()=="重新開(kāi)始")
{//重新開(kāi)始，相應(yīng)的控制重置
restar(h1,this);
restar(h2,this);
restar(h3,this);
restar(h4,this);
cotrol=true;
no=0;
ta.setText("");
tf.setEditable(true);
b1.setEnabled(true);
b2.setEnabled(true);
b3.setEnabled(true);
b4.setEnabled(true);
jb.setText("開(kāi)始");
}
}
class racing extends Thread
{//馬運(yùn)動(dòng)的線程控制
Draw a;
Run r ;
DateUtil d=new DateUtil();
racing(Draw h,Run b)
{
this.a=h;
this.r=b;
}

import java.util.;
public class DateUtil{
	public static String getNow_M(){
		Calendar c=Calendar.getInstance();
		String minute=String.valueOf(c.get(Calendar.MINUTE));
		if(minute.length()==1){
			minute="0"+minute;
		}
		String ms1=minute;
		return ms1;
	}
	public static String getNow_S(){
		Calendar c=Calendar.getInstance();
		String second=String.valueOf(c.get(Calendar.SECOND));
		if(second.length()==1){
			second="0"+second;
		}
		String ms2=second;
		return ms2;
	}
	public int getNow_HMS(){
		String s1,s2;
		s1=getNow_M();
		s2=getNow_S();
		int a=Integer.parseint(s1)60+Integer.parseint(s2);
		return a;
	}
	public static void main(String[] args) {
		DateUtil d;
		d=new DateUtil();
		d.getNow_HMS();
	}
}
public int Time(){
	int oo=d1.getNow_HMS();
	return oo;
}

public void run()
{
	int t;
	int o,y;
	o=r.Time();
	……
	y=d.getNow_HMS();
	int z=y-o;
	ta.append("用時(shí)："+z+"秒"+'n');
}