Question

java程序问题求助，急！！！在线等！！！

public class TetrisGame extends JFrame {
public final static int PER_LINE_SCORE = 100;
public final static int PER_LEVEL_SCORE = PER_LINE_SCORE * 10;
public final static int MAX_LEVEL = 10;
public final static int DEFAULT_LEVEL = 0;
private WindowPlay mywindow;
private Tetris block;
private boolean playing = false;
private Control ctrlPanel;
//建立菜单
private JMenuBar bar = new JMenuBar();
private JMenu mdifficulty=new JMenu("选择级别");
public void diff(){
ButtonGroup bg=new ButtonGroup();
JRadioButton zero;
zero=new JRadioButton("0级，方块下落速度为1.3秒", true);
zero.addActionListener(this);//不知道为什么这个地方总是报错“The method addActionListener(ActionListener) in the type AbstractButton is not applicable for the arguments (TetrisGame) ”
}
}

问题出在函数diff中，详细问题在注释上有。
请高手帮帮忙吧！！！只要能真正解决问题一定给分！！！

Answer 1

zero.addActionListener(this)
this表示的是TetrisGame这个类，这个类并没有实现ActionListener接口
addActionListener接收一个ActionLisetener的对象，所以参数不正确
只要给TetrisGame实现那个接口就可以了

Answer 2

什么问题？我在线回答~~

等这么久了~~~没有补充问题啊................

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