Java实现的学生管理系统带图形界面

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
class Student implements java.io.Serializable{
    private String number,name,major,grade,date,sex,uni;
    public Student(){};
    public void setNumber(String number)
    { this.number=number;}
    public String getNumber()
    { return number;}
    public void setName(String name)
    { this.name=name;}
    public String getName()
    { return name;}
    public void setMajor(String major)
    { this.major=major;}
    public String getMajor()
    { return major;}
    public void setGrade(String grade)
    { this.grade=grade;}
    public String getGrade()
    { return grade;}
    public void setDate(String date)
    { this.date=date;}
    public String getDate()
    { return date;}    
    public void setSex(String sex)
    { this.sex=sex;}

    public String getSex()
    { return sex;}
    public void setUni(String uni)
    { this.uni=uni;}
    public String getUni()
    { return uni;}
}
public class studentGUI extends JFrame{

    JLabel     JL      =new JLabel("学 生 信 息 管 理",JLabel.CENTER);
JLabel     JLNumber=new JLabel("学号:",JLabel.CENTER);
JTextField JTNumber=new JTextField(6);
JLabel     JLName  =new JLabel("姓名:",JLabel.CENTER);
JTextField JTName  =new JTextField(6);
JLabel     JLMajor  =new JLabel("专业:",JLabel.CENTER);
JTextField JTMajor  =new JTextField(6);
JLabel     JLGrade =new JLabel("班级:",JLabel.CENTER);
JTextField JTGrade =new JTextField(6);
JLabel     JLsex   =new JLabel("性别:",JLabel.CENTER);
JRadioButton JRB1  =new JRadioButton("男");
JRadioButton JRB2  =new JRadioButton("女");
ButtonGroup  group=new ButtonGroup();
        JLabel    JLDate=new JLabel("出生日期:",JLabel.CENTER);
        JTextField JTDate =new JTextField(8);
        JLabel     JLUni   =new JLabel("联合培养",JLabel.CENTER);
     JRadioButton JB1  =new JRadioButton("是");
JRadioButton JB2  =new JRadioButton("否");
 ButtonGroup group1=new ButtonGroup();
        JButton enter=new JButton("录入");
        JButton inquire=new JButton("查询");