JAVA编程：用一个按纽、一个标签、三个单选按钮，根据所选的单选按钮分别计算：1+2+、、、+n

我强烈要求搂住给我追加分数，累死我了！

╰☆╮江水寒 版权所有
import java.awt.*;
import java.awt.event.*;

/**
* <p>Title: 图形用户界面</p>
*
* <p>Description: 简单的图形界面编程</p>
*
* <p>Copyright: Copyright (c) 2006</p>
*
* <p>Company: </p>
*
* @author ╰☆╮江水寒
* @version 1.0
*/
public class Baidu extends Frame implements ActionListener {
private TextField T;
private Button B1, B2, B3;
private Label L;
public Baidu() {
setSize(300, 150);
setBackground(Color.yellow);
WindowDestroyer Listener = new WindowDestroyer();
addWindowListener(Listener);
setTitle("三 种 功 能");
setLayout(new BorderLayout());
Panel p1 = new Panel();
p1.setBackground(Color.gray);
p1.setLayout(new FlowLayout());
L = new Label("请输入N: