java计时

最新推荐文章于 2024-07-21 23:28:05 发布
转载最新推荐文章于 2024-07-21 23:28:05 发布 · 635 阅读
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import 
java.awt.Button;
import 
java.awt.FlowLayout;
import 
java.awt.Label;
import 
java.awt.event.ActionEvent;
import 
java.awt.event.ActionListener;
import 
java.text.SimpleDateFormat;
import 
java.util.Date;
import 
javax.swing.JFrame;
import 
javax.swing.Timer;
@SuppressWarnings("serial")
public 
class Timers extends
JFrame {
    final
Label lab = new
Label();
    Date now =
new Date();
    @SuppressWarnings("deprecation")
    public
Timers() {
        
now.setHours(0);
        
now.setMinutes(0);
        
now.setSeconds(0);
        
setBounds(550,
270, 200,
150);
        
final Timer timer = 
new Timer(1000,
new ActionListener() {
            
public void 
actionPerformed(ActionEvent e) {
               
Date now2 = new
Date(now.getTime() + 1000);
               
now = now2;
               
SimpleDateFormat formatter = new
SimpleDateFormat("HH:mm:ss");
               
lab.setText(formatter.format(now));
            
}
        
});
        
Button b1 = new
Button("开始");
        
Button <a class="baidu-highlight"
href="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0"
target="_blank" 
herf="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0">b2</a>
 = new Button("停止");
        
<a class="baidu-highlight"
href="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0"
target="_blank" 
herf="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0">b2</a>.setBounds(40,
40, 40,
40);
        
b1.setBounds(30,
30, 30,
30);
        
b1.addActionListener(new
ActionListener() {
            
@Override
            
public void 
actionPerformed(ActionEvent e) {
               
Button b = (Button) e.getSource();
               
b.setLabel("开始");
               
timer.start();
            
}
        
});
        
<a class="baidu-highlight"
href="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0"
target="_blank" 
herf="https://www.baidu.com/s?wd=b2&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvmhR1PH9hujwbmhPWryfz0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1DLPWTvPW6LnWfLnWmYrjTLnj0">b2</a>.addActionListener(new
ActionListener() {
            
@Override
            
public void 
actionPerformed(ActionEvent e) {
               
Button b = (Button) e.getSource();
               
b.setLabel("停止");
               
timer.stop();
            
}
        
});
    
        
this.setLayout(new
FlowLayout());
        
this.add(b2);
        
this.add(b1);
        
this.add(lab);
        
this.setSize(300,
200);
        
this.setVisible(true);
        
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
    public
static void 
main(String[] args) {
        
Timers t = new 
Timers();
        
t.lab.setText("00:00:00");
    }
}