import java.awt.*;import java.awt.event.*;import java.applet.*;import javax.swing.*;public class MainWindow extends Frame implements ActionListener{ Label lab1,lab2,lab3,lab4,lab5,lab6,lab7,lab8; TextField text1,text2,text3,text4,text5; CheckboxGroup sex; Checkbox male,female; Choice group; Panel scan,operation; public void init() { setLayout(null); setSize(450,500); setVisible(true); lab1=new Label("用户编号"); lab2=new Label("姓名"); lab3=new Label("性别"); lab4=new Label("类别"); lab5=new Label("出生日期"); lab6=new Label("联系方式"); lab7=new Label("家庭住址"); lab8=new Label("照片"); text1=new TextField(); text1.setEditable(false); text2=new TextField(); text3=new TextField(); text4=new TextField(); text5=new TextField(); sex=new CheckboxGroup(); male=new Checkbox("男",sex,true); female=new Checkbox("女",sex,fals