JAVA======按钮事件响应的实例化代码

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

class  Day1108_Frame extends JFrame implements ActionListener
{
public static void main(String[] args)
{
Day1108_Frame d=new Day1108_Frame();
}
Timer timer ;
JLabel bo[]=new JLabel[13];
int pxy[][]={{250,200},{170,230},{100,250}};
int centerx=250;
int centery=200;
int ang1,ang2,mov_ang1,mov_ang2;
double len1,len2;
public Day1108_Frame()
{
super("窗口");
Container c=getContentPane();
c.setLayout(null);
c.setBackground(Color.white);
ImageIcon icon1=new ImageIcon("x.jpg");
for (int i=0;i<3 ; i++)
{
bo[i]=new JLabel(icon1);
bo[i].setSize(23,23);
b0[i].setLocation(pxy[i][0],pxy[i][1]);
c.add(bo[i]);
}

}
}