用java编写学生信息管理系统

1、精心整理用java编写学生信息管理系统import java.awt.*;import .*;import javax.swing.*;import java.io.*;import java.util.*;class Student implements String number,name,specialty,grade,borth,sex;public Student();勺”11丁public void setNumber(String number) this.number=number;public String getNumber() return number;public v

2、oid setName(String name) =name;public String getName() return name;public void setSex(String sex) this.sex=sex;public String getSex() return sex;public void setSpecialty(String specialty) this.specialty=specialty;public String getSpecialty() return specialty;public void setGrade(String grad

3、e) this.grade=grade;public String getGrade() return grade;public void setBorth(String borth) this.borth=borth;public String getBorth() return borth;精心整理精心整理 public class StudentManager extends JFrameJLabel lb=new JLabelC录入请先输入记录，查询、删除请先输入学号，修改是对查询”+“内容改后的保存！")；static JTextField Jnumber,Jname,Js

4、pecialty,Jgrade,Jborth;static JRadioButton boy,girl;static ButtonGroup group=null;static JButton Login,select,delete,update,show;static JPanel p1,p2,p3,p4,p5,p6,pv,ph;static Student student=null;static Hashtable Shashtable=null;static File file=null;static FileInputStream inOne=null;static ObjectInp

5、utStream inTwo=null;static FileOutputStream outOne=null;static ObjectOutputStream outTwo=null;public StudentManager()super("学生基本信息管理系统");Jnumber=new JTextField(10);Jname =new JTextField(10);Jspecialty=new JTextField(10);Jgrade=new JTextField(10);精心整理精心整理Jborth=new JTextField(10);group=new

6、ButtonGroup();boy=new JRadioButton("男",true);girl=new JRadioButton("女"false);group.add(boy);group.add(girl);Login=new JButton("录入)select=new JButton('查询)delete=new JButton。删除)update=new JButton('修改)show=new JButton("显示)Login.addActionListener(new InputAct();sele

7、ct.addActionListener(new InquestAct();update.addActionListener(new ModifyAct();delete.addActionListener(new DeleteAct();show.addActionListener(new ShowAct();update.setEnabled(false);p1=new JPanel();p1.add(new JLabelC 学号:",JLabel.CENTER);p1.add(Jnumber);p2=new JPanel();p2.add(new JLabelC姓名:"

8、;,JLabel.CENTER);p2.add(Jname);精心整理p3=new JPanel();p3.add(new JLabel(性另 fj:",JLabel.CENTER);p3.add(boy);p3.add(girl);p4=new JPanel();p4.add(new JLabelC 专业:",JLabel.CENTER);p4.add(Jspecialty);p5=new JPanel();p5.add(new JLabelC 年级:",JLabel.CENTER);p5.add(Jgrade);p6=new JPanel();p6.add(n

9、ew JLabel("出生:",JLabel.CENTER);p6.add(Jborth);pv=new JPanel();pv.setLayout(new GridLayout(6,1);pv.add(pl);pv.add(p2);pv.add(p3);pv.add(p4);pv.add(p5);pv.add(p6);ph=new JPanel();ph.add(Login);精心整理精心整理ph.add(select);ph.add(update);ph.add(delete);ph.add(show);file=new File("学生信息.txt"

10、;);Shashtable=new Hashtable();if(!file.exists()tryFileOutputStream out=new FileOutputStream(file);ObjectOutputStream objectOut=new ObjectOutputStream(out);objectOut.writeObject(Shashtable);objectOut.close();out.close();catch(IOException e)Container con=getContentPane();con.setLayout(new BorderLayout

11、();con.add(lb, BorderLayout.NORTH);con.add(pv, BorderLayout.CENTER);con.add(ph, BorderLayout.SOUTH);setDefaultCloseOperation(EXIT_ON_CLOSE);setBounds(100,100,600,300);精心整理精心整理setVisible(true);public static void main(String口 args) new StudentManager();class InputAct implements ActionListenerpublic vo

12、id actionPerformed(ActionEvent e)update.setEnabled(false);String number=""number=Jnumber.getText();if(number.length()>0)tryinOne=new FileInputStream(file);inTwo=new ObjectInputStream(inOne);Shashtable=(Hashtable)inTwo.readObject();inOne.close();inTwo.close();catch(Exception ee)("创建

13、散列表出现问题！");if(Shashtable.containsKey(number)String warning="该生信息已存在，请到修改页面修改!JOptionPane.showMessageDialog(null,warning,警告”,JOptionPane.WARNING_MESSAGE);/end if1 elseString m="该生信息将被录入！"int ok=JOptionPane.showConfirmDialog(null,m,"确认"，JOptionPane.YES_NO_OPTION,JOptionPa

14、ne.INFORMATION_MESSAGE);if(ok=JOptionPane.YES_OPTION)String name=Jname.getText();String specialty=Jspecialty.getText();String grade=Jgrade.getText();String borth=Jborth.getText();String sex=null;if(boy.isSelected()sex=boy.getText();elsesex=girl.getText();student=new Student();student.setNumber(numbe

15、r);student.setName(name);student.setSpecialty(specialty);student.setGrade(grade);student.setBorth(borth);student.setSex(sex);tryoutOne=new FileOutputStream(file);outTwo=new ObjectOutputStream(outOne);Shashtable.put(number,student);outTwo.wHteObject(Shashtable);outTwo.close();outOne.close();catch(Exc

16、eption ee)("输出散列表出现问题！");Jnumber.setText(null);Jname.setText(null);Jspecialty.setText(null);Jgrade.setText(null);Jborth.setText(null);/end elsel/end if0elseString warning="必须输入学号！"JOptionPane.showMessageDialog(null,warning,"警告",JOptionPane.WARNING_MESSAGE);/end else。/en

17、d actionPerformed/end classclass InquestAct implements ActionListenerpublic void actionPerformed(ActionEvent e)String number=""number=Jnumber.getText();if(number.length()>0)tryinOne=new FilelnputStream(file);inTwo=new ObjectlnputStream(inOne);Shashtable=(Hashtable)inTwo.readObject();inO

18、ne.close();inTwo.close();catch(Exception ee)("散歹！J 表有问题！ ");if(Shashtable.containsKey(number)update.setEnabled(true);Student stu=(Student)Shashtable.get(number);Jname.setText(stu.getName();Jspecialty.setText(stu.getSpecialty();Jgrade.setText(stu.getGrade();Jborth.setText(stu.getBorth();if(

19、stu.getSex().equalsC 男")boy.setSelected(true); elsegirl.setSelected(true);elsen.update.setEnabled(false);String warning="该学号不存在!JOptionPane.showMessageDialog(null,warning,"警告",JOptionPane.WARNING_MESSAGE);elseupdate.setEnabled(false);String warning="必须输入学号！"JOptionPane.

20、showMessageDialog(null,warning,"警告",JOptionPane.WARNING_MESSAGE);class ModifyAct implements ActionListenerpublic void actionPerformed(ActionEvent e)String number=Jnumber.getText();String name=Jname.getText();String specialty=Jspecialty.getText();String grade=Jgrade.getText();String borth=J

21、borth.getText();String sex=null;if(boy.isSelected()sex=boy.getText();elsesex=girl.getText();Student 学生=new Student();学生.setNumber(number);学生.setName(name);学生.setSpecialty(specialty);学生.setGrade(grade);学生.setBorth(borth);学生.setSex(sex);tryoutOne=new FileOutputStream(file);outTwo=new ObjectOutputStrea

22、m(outOne);Shashtable.put(number,学生)；outTwo.writeObject(Shashtable);outTwo.close();outOne.close();Jnumber.setText(null);Jname.setText(null);Jspecialty.setText(null);Jgrade.setText(null);Jborth.setText(null);catch(Exception ee)("录入修改出现异常！")；update.setEnabled(false);精心整理精心整理class DeleteAct im

23、plements ActionListenerpublic void actionPerformed(ActionEvent e)update.setEnabled(false);String number=Jnumber.getText();if(number.length()>0)tryinOne=new FileInputStream(file);inTwo=new ObjectInputStream(inOne);Shashtable=(Hashtable)inTwo.readObject();inOne.close();inTwo.close();catch(Exception

24、 ee)if(Shashtable.containsKey(number)Student stu=(Student)Shashtable.get(number);Jname.setText(stu.getName();Jspecialty.setText(stu.getSpecialty();Jgrade.setText(stu.getGrade();Jborth.setText(stu.getBorth();if(stu.getSex().equalsC 男")boy.setSelected(true);elsegirl.setSelected(true);精心整理精心整理Stri

25、ng m="确定要删除该学生的记录吗？"int ok=JOptionPane.showConfirmDialog(null,m,"确认"，JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);if(ok=JOptionPane.YES_OPTION)Shashtable.remove(number);tryoutOne=new FileOutputStream(file);outTwo=new ObjectOutputStream(outOne);outTwo.writeObject(Shasht

26、able);outTwo.close();outOne.close();Jnumber.setText(null);Jname.setText(null);Jspecialty.setText(null);Jgrade.setText(null);Jborth.setText(null);catch(Exception ee)(ee);else if(ok=JOptionPane.NO_OPTION)Jnumber.setText(null);精心整理Jname.setText(null);Jspecialty.setText(null);Jgrade.setText(null);Jborth

27、.setText(null);elseString warning="该学号不存在！"JOptionPane.showMessageDialog(null,warning,"警告",JOptionPane.WARNING_MESSAGE);elseString warning="必须输入学号！"JOptionPane.showMessageDialog(null,warning,"警告",JOptionPane.WARNING_MESSAGE);class ShowAct implements ActionListenerpublic void actionPerformed(ActionEvent e)new StudentShow(file);精心整理精心整理class StudentShow extends JDialogHashtable学生散列表=null;JTextArea 显示=null;FileInputStream inOne=null;ObjectInputStream inTwo=null;File file=null;public StudentShow(File file)super(new JFram