Swing

package day02;
import java.awt.FlowLayout;
import javax.swing.*;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class AA extends JFrame{
    public AA()
    {
        JFrame jf1=new JFrame ("Hellow");
        jf1.setLayout(new FlowLayout());
        jf1.getContentPane().add(new JButton("姓名")) ;
        jf1.getContentPane().add(new JTextField("谢云川",10)) ;

        JRadioButton j1=new JRadioButton("男",true);
        JRadioButton j2=new JRadioButton("女");
        ButtonGroup g=new ButtonGroup();
        g.add(j1);
        g.add(j2);
        JPanel p1=new JPanel();
        p1.add(j1);
        p1.add(j2);
        jf1.getContentPane().add(p1);
        jf1.setSize(320,210);

        String proList[] = { "年龄","民族" ,"籍贯","学号","学院","专业"};
        JComboBox comboBox;
        Container conPane = getContentPane();
        comboBox = new JComboBox(proList);
        comboBox.setEditable(true);
        conPane.add(comboBox);
        JTextField b=new JTextField(20);
        jf1.add(conPane);
        jf1.add(b);
        comboBox.addActionListener(new ActionListener()
        {public void actionPerformed(ActionEvent e)
        {
            if(comboBox.getSelectedItem().equals("年龄"))
                b.setText("20");
            else if(comboBox.getSelectedItem().equals("民族"))
                b.setText("汉");
            else if(comboBox.getSelectedItem().equals("籍贯"))
                b.setText("重庆");
            else if(comboBox.getSelectedItem().equals("学号"))
                b.setText("20173311129");
            else if(comboBox.getSelectedItem().equals("学院"))
                b.setText("计算机学院");
            else if(comboBox.getSelectedItem().equals("专业"))

                b.setText("网络工程");
        }
        });


        jf1.setVisible(true);
    }
    public static void main (String[] args) {
        new AA()
        ;  }





}