lesson7：gui： 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 stub
new 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() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(checkbox1.isSelected())
{
textArea.append('\n'+checkbox1.getText());
}
}
});
checkbox2.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(checkbox2.isSelected())
textArea.append('\n'+checkbox2.getText());
}
});
checkbox3.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(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() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(radio1.isSelected())
textArea.append('\n'+radio1.getText());
}
});
radio2.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(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);

}

}