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]);}}}