用java编写学生信息管理系统

1、用java编写学生信息管理系统import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.io.*; import java.util.*; class Student implements java.io.Serializable String number,name,specialty,grade,borth,sex; public Student(); public void setNumber(String number) this.number=number; public String

2、getNumber() return number; public void 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 sp

3、ecialty; public void setGrade(String grade) this.grade=grade; public String getGrade() return grade; public void setBorth(String borth) this.borth=borth; public String getBorth() return borth; public class StudentManager extends JFrame JLabel lb=new JLabel("录入请先输入记录，查询、删除请先输入学号，修改是对查询" + &

4、quot;内容改后的保存！"); static JTextField Jnumber,Jname,Jspecialty,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 Fi

5、le file=null; static FileInputStream inOne=null; static ObjectInputStream 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

6、); Jgrade=new JTextField(10); Jborth=new JTextField(10); group=new 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&

7、quot;); update=new JButton("修改"); show=new JButton("显示"); Login.addActionListener(new InputAct(); select.addActionListener(new InquestAct(); update.addActionListener(new ModifyAct(); delete.addActionListener(new DeleteAct(); show.addActionListener(new ShowAct(); update.setEnabled

8、(false); p1=new JPanel(); p1.add(new JLabel("学号:",JLabel.CENTER); p1.add(Jnumber); p2=new JPanel(); p2.add(new JLabel("姓名:",JLabel.CENTER); p2.add(Jname); p3=new JPanel(); p3.add(new JLabel("性别:",JLabel.CENTER); p3.add(boy); p3.add(girl); p4=new JPanel(); p4.add(new JLa

9、bel("专业:",JLabel.CENTER); p4.add(Jspecialty); p5=new JPanel(); p5.add(new JLabel("年级:",JLabel.CENTER); p5.add(Jgrade); p6=new JPanel(); p6.add(new JLabel("出生:",JLabel.CENTER); p6.add(Jborth); pv=new JPanel(); pv.setLayout(new GridLayout(6,1); pv.add(p1); pv.add(p2); pv.

10、add(p3); pv.add(p4); pv.add(p5); pv.add(p6); ph=new JPanel(); ph.add(Login); ph.add(select); ph.add(update); ph.add(delete); ph.add(show); file=new File("学生信息.txt"); Shashtable=new Hashtable(); if(!file.exists() try FileOutputStream out=new FileOutputStream(file); ObjectOutputStream object

11、Out=new ObjectOutputStream(out); objectOut.writeObject(Shashtable); objectOut.close(); out.close(); catch(IOException e) Container con=getContentPane(); con.setLayout(new BorderLayout(); con.add(lb, BorderLayout.NORTH); con.add(pv, BorderLayout.CENTER); con.add(ph, BorderLayout.SOUTH); setDefaultClo

12、seOperation(EXIT_ON_CLOSE); setBounds(100,100,600,300); setVisible(true); public static void main(String args) new StudentManager(); class InputAct implements ActionListener public void actionPerformed(ActionEvent e) update.setEnabled(false); String number="" number=Jnumber.getText(); if(n

13、umber.length()>0) try inOne=new FileInputStream(file); inTwo=new ObjectInputStream(inOne); Shashtable=(Hashtable)inTwo.readObject(); inOne.close(); inTwo.close(); catch(Exception ee)System.out.println("创建散列表出现问题！"); if(Shashtable.containsKey(number) String warning="该生信息已存在，请到修改页面修改

14、！" JOptionPane.showMessageDialog(null,warning,"警告", JOptionPane.WARNING_MESSAGE); /end if1 else String m="该生信息将被录入！" int ok=JOptionPane.showConfirmDialog(null,m,"确认", JOptionPane.YES_NO_OPTION,JOptionPane.INFORMATION_MESSAGE); if(ok=JOptionPane.YES_OPTION) String n

15、ame=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(number); student.setName(name); student.setSpecialty(speci

16、alty); student.setGrade(grade); student.setBorth(borth); student.setSex(sex); try outOne=new FileOutputStream(file); outTwo=new ObjectOutputStream(outOne); Shashtable.put(number,student); outTwo.writeObject(Shashtable); outTwo.close(); outOne.close(); catch(Exception ee)System.out.println("输出散列

17、表出现问题！"); Jnumber.setText(null); Jname.setText(null); Jspecialty.setText(null); Jgrade.setText(null); Jborth.setText(null); /end else1 /end if0 else String warning="必须输入学号！" JOptionPane.showMessageDialog(null,warning, "警告",JOptionPane.WARNING_MESSAGE); /end else0 /end action

18、Performed /end class class InquestAct implements ActionListener public void actionPerformed(ActionEvent e) String number="" number=Jnumber.getText(); if(number.length()>0) try inOne=new FileInputStream(file); inTwo=new ObjectInputStream(inOne); Shashtable=(Hashtable)inTwo.readObject();

19、inOne.close(); inTwo.close(); catch(Exception ee)System.out.println("散列表有问题！"); 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.

20、setText(stu.getBorth(); if(stu.getSex().equals("男")boy.setSelected(true); elsegirl.setSelected(true); else update.setEnabled(false); String warning="该学号不存在！" JOptionPane.showMessageDialog(null,warning, "警告",JOptionPane.WARNING_MESSAGE); else update.setEnabled(false); St

21、ring warning="必须输入学号！" JOptionPane.showMessageDialog(null,warning, "警告",JOptionPane.WARNING_MESSAGE); class ModifyAct implements ActionListener public void actionPerformed(ActionEvent e) String number=Jnumber.getText(); String name=Jname.getText(); String specialty=Jspecialty.get

22、Text(); String grade=Jgrade.getText(); String borth=Jborth.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); t

23、ry outOne=new FileOutputStream(file); outTwo=new ObjectOutputStream(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 e

24、e) System.out.println("录入修改出现异常!"); update.setEnabled(false); class DeleteAct implements ActionListener public void actionPerformed(ActionEvent e) update.setEnabled(false); String number=Jnumber.getText(); if(number.length()>0) try inOne=new FileInputStream(file); inTwo=new ObjectInputS

25、tream(inOne); Shashtable=(Hashtable)inTwo.readObject(); inOne.close(); inTwo.close(); catch(Exception 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(s

26、tu.getBorth(); if(stu.getSex().equals("男")boy.setSelected(true); elsegirl.setSelected(true); String 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.remo

27、ve(number); try outOne=new FileOutputStream(file); outTwo=new ObjectOutputStream(outOne); 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)System.out.pr

28、intln(ee); else if(ok=JOptionPane.NO_OPTION) Jnumber.setText(null); Jname.setText(null); Jspecialty.setText(null); Jgrade.setText(null); Jborth.setText(null); else String warning="该学号不存在！" JOptionPane.showMessageDialog(null,warning, "警告",JOptionPane.WARNING_MESSAGE); else String

29、warning="必须输入学号！" JOptionPane.showMessageDialog(null,warning, "警告",JOptionPane.WARNING_MESSAGE); class ShowAct implements ActionListener public void actionPerformed(ActionEvent e) new StudentShow(file); class StudentShow extends JDialog Hashtable 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 JFrame(),"显示对话框&qu