add(r1);这里开始出错.
     类型 Container 中的方法 add（Component）对于参数（JRadioButton）不适用
     要怎么改才可以在JRadioButton中用add呢

     JCheckBox t1=new JCheckBox("Visual Basic");
     JCheckBox t2=new JCheckBox("Visual C++");
     JCheckBox t3=new JCheckBox("Java");
     ButtonGroup bg=new ButtonGroup();
     JRadioButton r1=new JRadioButton("专科",true);
     JRadioButton r2=new JRadioButton("本科",false);
     JRadioButton r3=new JRadioButton("硕士");
     JRadioButton r4=new JRadioButton("博士",false);
     Label lb1=new Label("你的学历为：");
     Label lb2=new Label("你精通的语言为：");
     public JCheckBoxRadioButtonTest (String str){
         super(str);
         setLayout(new GridLayout(10,1));
         bg.add(r1);
         bg.add(r2);
         bg.add(r3);
         bg.add(r4);
         add(lb1);
         add(r1);
         add(r2);
         add(r3);
         add(r4);
         add(lb2);
         add(t1);
         add(t2);
         add(t3);

setLayout(new GridLayout(10,1));

网格布局10行一列，恩。。。。是不是没实现容器接口

-.-什么是实现容器接口


                    这是全部代码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JCheckBoxRadioButtonTest extends JFrame{
    JCheckBox t1=new JCheckBox("Visual Basic");
    JCheckBox t2=new JCheckBox("Visual C++");
    JCheckBox t3=new JCheckBox("Java");
    ButtonGroup bg=new ButtonGroup();
    JRadioButton r1=new JRadioButton("专科",true);
    JRadioButton r2=new JRadioButton("本科",false);
    JRadioButton r3=new JRadioButton("硕士");
    JRadioButton r4=new JRadioButton("博士",false);
    Label lb1=new Label("你的学历为：");
    Label lb2=new Label("你精通的语言为：");
    public JCheckBoxRadioButtonTest (String str){
        super(str);
        setLayout(new GridLayout(10,1));
        bg.add(r1);
        bg.add(r2);
        bg.add(r3);
        bg.add(r4);
        add(lb1);
        add(r1);
        add(r2);
        add(r3);
        add(r4);
        add(lb2);
        add(t1);
        add(t2);
        add(t3);            
        addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.exit(0);
                System.out.println("program exited");
            }
        });
    }
    public static void main(String[] args){
        JCheckBoxRadioButtonTest jCheckBoxRadioButtonTest=new JCheckBoxRadioButtonTest("个人基础信息统计");
        jCheckBoxRadioButtonTest.setSize(400,250);
        jCheckBoxRadioButtonTest.setVisible(true);
    }
}

public class JCheckBoxRadioButtonTest extends JFrame{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    JCheckBox t1=new JCheckBox("Visual Basic");
    JCheckBox t2=new JCheckBox("Visual C++");
    JCheckBox t3=new JCheckBox("Java");
    ButtonGroup bg=new ButtonGroup();
    JRadioButton r1=new JRadioButton("专科",true);
    JRadioButton r2=new JRadioButton("本科",false);
    JRadioButton r3=new JRadioButton("硕士");
    JRadioButton r4=new JRadioButton("博士",false);
    Label lb1=new Label("你的学历为：");
    Label lb2=new Label("你精通的语言为：");
    public JCheckBoxRadioButtonTest (String str){
        super(str);
        setLayout(new GridLayout(10,1));
        bg.add(r1);
        bg.add(r2);
        bg.add(r3);
        bg.add(r4);
        add(lb1);
        add(r1);
        add(r2);
        add(r3);
        add(r4);
        add(lb2);
        add(t1);
        add(t2);
        add(t3);            
        addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){
                System.out.println("program exited");
                System.exit(0);
            }
        });
    }
    public static void main(String[] args){
        JCheckBoxRadioButtonTest jCheckBoxRadioButtonTest=new JCheckBoxRadioButtonTest("个人基础信息统计");
        jCheckBoxRadioButtonTest.setSize(400,250);
        jCheckBoxRadioButtonTest.setVisible(true);
    }
}

没错啊，不过窗体事件处理顺序调一下先打印后退出。

但是会报错
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
      public class JCheckBoxRadioButtonTest extends JFrame{
     /**
      *
      */
     private static final long serialVersionUID = 1L;
     JCheckBox t1=new JCheckBox("Visual Basic");
     JCheckBox t2=new JCheckBox("Visual C++");
     JCheckBox t3=new JCheckBox("Java");
     ButtonGroup bg=new ButtonGroup();
     JRadioButton r1=new JRadioButton("专科",true);
     JRadioButton r2=new JRadioButton("本科",false);
     JRadioButton r3=new JRadioButton("硕士");
     JRadioButton r4=new JRadioButton("博士",false);
     Label lb1=new Label("你的学历为：");
     Label lb2=new Label("你精通的语言为：");
     public JCheckBoxRadioButtonTest (String str){
         super(str);
         setLayout(new GridLayout(10,1));
         bg.add(r1);
         bg.add(r2);
         bg.add(r3);
         bg.add(r4);
         add(lb1);
         add(r1);             //类型 Container 中的方法 add（Component）对于参数（JRadioButton）不适用
         add(r2);
         add(r3);
         add(r4);
         add(lb2);
         add(t1);
         add(t2);
         add(t3);            
         addWindowListener(new WindowAdapter(){
             public void windowClosing(WindowEvent e){
                 System.out.println("program exited");
                 System.exit(0);
             }
         });
     }
     public static void main(String[] args){
         JCheckBoxRadioButtonTest jCheckBoxRadioButtonTest=new JCheckBoxRadioButtonTest("个人基础信息统计");
         jCheckBoxRadioButtonTest.setSize(400,250);
         jCheckBoxRadioButtonTest.setVisible(true);
     }
 }

不会吧，又不是泛型

编译器问题？helloworld能打印？

我用的eclipse啊

好巧，我也是，qq是昵称？