import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MyFirstWindow extends JFrame implements ActionListener{
JLabel label1 =new JLabel("兴趣:");
JCheckBox checkBox1=new JCheckBox("羽毛球");
JCheckBox checkBox2=new JCheckBox("乒乓球");
JCheckBox checkBox3=new JCheckBox("唱歌");
JLabel label2=new JLabel("性别:");
JRadioButton radioButtion1 =new JRadioButton("男");
JRadioButton radioButtion2 =new JRadioButton("女");
JTextArea textArea = new JTextArea(25,25);
MyFirstWindow(){
super("我的Java作业");
Container contentPane=getContentPane();
//盒子
Box box1=Box.createHorizontalBox();
Box box2=Box.createHorizontalBox();
box1.add(label1);
box1.add(checkBox1);
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import java.awt.event.*;
import javax.swing.*;
public class MyFirstWindow extends JFrame implements ActionListener{
JLabel label1 =new JLabel("兴趣:");
JCheckBox checkBox1=new JCheckBox("羽毛球");
JCheckBox checkBox2=new JCheckBox("乒乓球");
JCheckBox checkBox3=new JCheckBox("唱歌");
JLabel label2=new JLabel("性别:");
JRadioButton radioButtion1 =new JRadioButton("男");
JRadioButton radioButtion2 =new JRadioButton("女");
JTextArea textArea = new JTextArea(25,25);
MyFirstWindow(){
super("我的Java作业");
Container contentPane=getContentPane();
//盒子
Box box1=Box.createHorizontalBox();
Box box2=Box.createHorizontalBox();
box1.add(label1);
box1.add(checkBox1);
<