面向对象Java课程设计下载

[weixin_39821620]

源程序
import javax.swing.*;
import java.awt.event.*;
public class Block extends JButton implements ActionListener
{
ImageIcon 翻开时的图标=null,关闭时的图标=null;
public Block()
{
addActionListener(this);
}
public ImageIcon 获取翻开时的图标()
{
return 翻开时的图标;
}
public ImageIcon 获取关闭时的图标()
{
r
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