为什么我的程序窗口显示不正确？

Question

该项目是关于设计一个 GUI 调查问卷，人们可以在其中选择某些选项，然后将其与开发人员（即我的合作伙伴和我）进行比较。

它之前工作过，但我的 JRadioButton 相关代码坚决拒绝正常工作。我没有看到任何按钮，唯一显示的就是标签。我能做些什么来解决这个问题？这是我的代码：

import java.awt.*;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.awt.Container;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

public class MyFirstGUIDriver extends JFrame{
    public static void main(String[] args) {
           MyFirstGUI first=new MyFirstGUI();
            first.setTitle("MyFirstGUI");
            first.setSize(700,800);
            first.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            first.setVisible(true);
       }
}

以及定义类：

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.Container;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

@SuppressWarnings("Serial")
public class MyFirstGUI extends JFrame implements ActionListener {
JPanel apanel;

JButton quitButton;
JButton submitButton;

JLabel label1;
JLabel label2;
JLabel label3;
JLabel label4;
JLabel label5;
JLabel label6;

JTextField Text1;
JTextField Text2;
JTextField Text3;
JTextField Text4;
JTextField Text5;
JTextField Text6;

JFrame frame=new JFrame();


    public MyFirstGUI(){
        apanel=new JPanel(null);
        quitButton=new JButton("  Quit  ");
        quitButton.addActionListener(this);
        quitButton.setBounds(10,10,80,20);
        submitButton=new JButton("Submit");
        submitButton.setBounds(10,390,80,20);
        submitButton.addActionListener(this);
        label1 = new JLabel("Enter your name please.");
        label1.setBounds(10,30,150,20);
        Text1=new JTextField(10);
        Text1.setBounds(10,60,150,20);
        label2 = new JLabel("Enter your age please.");
        label2.setBounds(10,90,150,20);
        Text2=new JTextField(10);
        Text2.setBounds(10,120,150,20);
        label3 = new JLabel("Enter your favorite color please.");
        label3.setBounds(10,150,180,20);
        Text3=new JTextField(10);
        Text3.setBounds(10,180,150,20);
        label4 = new JLabel("PC or Console?");
        label4.setBounds(10,210,150,20);
        Text4=new JTextField(10);
        Text4.setBounds(10,240,150,20);
        label5 = new JLabel("Coke of Pepsi?");
        label5.setBounds(10,270,150,20);
        Text5=new JTextField(10);
        Text5.setBounds(10,300,150,20);
        label6 = new JLabel("McDonalds or Burger King?");
        label6.setBounds(10,330,170,20);
        Text6=new JTextField(10);
        Text6.setBounds(10,360,150,20);
        apanel.add(quitButton);
        apanel.add(submitButton);
        apanel.add(label1);
        apanel.add(label2);
        apanel.add(label3);
        apanel.add(label4);
        apanel.add(label5);
        apanel.add(label6);
        apanel.add(Text1);
        apanel.add(Text2);
        apanel.add(Text3);
        apanel.add(Text4);
        apanel.add(Text5);
        apanel.add(Text6);
        this.add(apanel);

        Container contentPane = frame.getContentPane();
        contentPane.setLayout(new GridLayout(0, 1));

        JRadioButton e1=new JRadioButton("PC");
        JRadioButton e2=new JRadioButton("Console");
        JRadioButton e3=new JRadioButton("Burger King");
        JRadioButton e4=new JRadioButton("McDonalds");
        JRadioButton e5=new JRadioButton("Coke");
        JRadioButton e6=new JRadioButton("Pepsi");

        ButtonGroup bg1 = new ButtonGroup( );
        ButtonGroup bg2 = new ButtonGroup( );
        ButtonGroup bg3 = new ButtonGroup( );

        bg1.add(e1);
        bg1.add(e2);
        bg2.add(e3);
        bg2.add(e4);
        bg3.add(e5);
        bg3.add(e6);

        contentPane.add(e1);
        contentPane.add(e2);
        contentPane.add(e3);
        contentPane.add(e4);
        contentPane.add(e5);
        contentPane.add(e6);

        apanel.add(e1);
        apanel.add(e2);
        apanel.add(e3);
        apanel.add(e4);
        apanel.add(e5);
        apanel.add(e6);






        }


    public void actionPerformed(ActionEvent event){
     if(event.getSource()==quitButton){
         System.exit(0);
        }

     if(event.getSource()==submitButton){
        String a1="Steven";
        int a2=14;
        String a3="Green";
        String a4="PC";
        String a5="Coke";
        String a6="McDonalds";
        String b1=Text1.getText();
        String c2=Text2.getText();
        int b2= Integer.parseInt(c2);
        String b3=Text3.getText();
        String b4=Text4.getText();
        String b5=Text5.getText();
        String b6=Text6.getText();
        String d1="";
        if(a2>b2){d1="You are younger than me.";}
        else if(b2>a2){d1="You are older than me.";}
        else{d1="You are the same age as me.";};
        JOptionPane.showMessageDialog(frame,"Hello "+b1+". My name is "+a1+"."+d1);
        }
    }




}

注意：无论哪种方式，我的程序都不完整。我仍然需要使按钮正常工作并替换我想要改进的文本框代码（确实有效）。

Answer 1

您需要为 radioButtons 设置边界尝试以下操作并根据需要对齐。

e1.setBounds(200, 260, 130, 23);
e2.setBounds(300, 260, 130, 23);
e3.setBounds(400, 260, 130, 23);
e4.setBounds(500, 260, 130, 23);
e5.setBounds(600, 260, 130, 23);
e6.setBounds(700, 260, 130, 23);