|
40Java金币
下面是我的程序的一部分
在eclipse中运行时,定时的方法不是每秒运行一次,而是越来越快,求解
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.Timer;
import javax.swing.JPanel;
public class as extends JFrame {
public static void main(String[] args) {
// TODO Auto-generated method stub
as frame = new as();
jump jump = new jump();
frame.add(jump);
frame.setTitle("跳刺");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(800, 250);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
frame.setResizable(false);
jump. setBackground(Color.white);
}
}
class jump extends JPanel {
int a = 794 ;
public void refresh(){
int delay =1000;
ActionListener listener = new ActionListener(){
public void actionPerformed(ActionEvent arg0){
repaint();
}
};
Timer timer = new Timer(delay,listener);
timer.start();
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
System.out.print(a+" ");
refresh();
}
}更多
|
|