作业： 编写一个JFrame窗口

import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.Label;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.Box;import javax.swing.ButtonGroup;import javax.swing.JCheckBox;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JRadioButton;import javax.swing.JScrollPane;import javax.swing.JTable;import javax.swing.JTextArea;public class MyFrame extends JFrame{private JPanel panel;private JLabel label1,label2;private JCheckBox checkbox1,checkbox2,checkbox3;private ButtonGroup btnGroup;private JRadioButton radio1,radio2;Box baseBox,boxv1,boxv2;public MyFrame(){init();setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setSize(500, 500);}public static void main(String[] args) {// TODO Auto-generated method stubnew MyFrame();}void init(){JTextArea textArea = new JTextArea();boxv1 = Box.createHorizontalBox();boxv1.add(new JLabel("兴趣:"));//boxv1.add(Box.createVerticalStrut(5));checkbox1 = new JCheckBox("羽毛球");checkbox2 = new JCheckBox("乒乓球");checkbox3 = new JCheckBox("唱歌");checkbox1.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(checkbox1.isSelected()){textArea.append('\n'+checkbox1.getText());}}});checkbox2.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(checkbox2.isSelected())textArea.append('\n'+checkbox2.getText());}});checkbox3.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(checkbox3.isSelected())textArea.append('\n'+checkbox3.getText());}});boxv1.add(checkbox1);//boxv1.add(Box.createHorizontalStrut(5));boxv1.add(checkbox2);//boxv1.add(Box.createHorizontalStrut(5));boxv1.add(checkbox3);//boxv2.add(Box.createHorizontalStrut(5));boxv2 = Box.createHorizontalBox();boxv2.add(new JLabel("性别:"));//boxv2.add(Box.createHorizontalStrut(5));btnGroup = new ButtonGroup();radio1 = new JRadioButton("男");radio2 = new JRadioButton("女");btnGroup.add(radio1);btnGroup.add(radio2);radio1.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(radio1.isSelected())textArea.append('\n'+radio1.getText());}});radio2.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(radio2.isSelected())textArea.append('\n'+radio2.getText());}});boxv2.add(radio1);//boxv2.add(Box.createHorizontalStrut(5));boxv2.add(radio2);panel = new JPanel();GridLayout gridLayout = new GridLayout(2, 1);panel.setLayout(gridLayout);panel.add(boxv1);panel.add(boxv2);add(panel,BorderLayout.NORTH);JScrollPane scroll = new JScrollPane(textArea);//scroll.setBounds(100, 100, 100, 100);add(scroll,BorderLayout.CENTER);}}