比上一个基于Mysql数据库的完善了一些细节
WindowIO是窗口界面
package JavaStuIO;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
//class student
class student implements java.io.Serializable{
String number;
String name;
String sex;
String birthday;
String department;
public student(String number,String name,String sex,String birthday,String department){
this.number = number;
this.name = name;
this.sex = sex;
this.birthday = birthday;
this.department = department;
}
}
public class WindowIO extends JFrame {
//private static final long serialVersionUID = -1928970409928880648L;
public static void main(String[] args){
/////////////////////////////////////////////////////////////////////////////
TreeMap<String,student> tm = new TreeMap<String,student>(); //treemap
//
File file =new File("E:\\java用文件","file.txt");
if(!file.exists())
{
FileOutputStream fout = null;
ObjectOutputStream oos = null;
try{
fout = new FileOutputStream(file);
oos = new ObjectOutputStream(fout);
oos.writeObject(tm);
fout.close();
oos.close();
System.out.println("write ok!!!");
}catch (Exception er){
er.printStackTrace();
System.out.println("writeobject go die");
}
}
/////////////////////////////////////////////////////////////////////////
JFrame jframe = new JFrame("学生管理系统") ;
JLabel title = new JLabel("这是一个学生管理系统",JLabel.CENTER);
Font font = new Font("",Font.BOLD+Font.PLAIN,15);
title.setFont(font);
ImageIcon icon = new ImageIcon("E:\\java用图片\\look.jpg");
icon.setImage(icon.getImage().getScaledInstance(150, 150, Image.SCALE_DEFAULT));
JLabel pic = new JLabel(icon);
//pic.setSize(10, 10);
//pic.setSize(50,100);?????
//pic.drawImage(???,100, 100, 50, 50,null);
jframe.setSize(450,300);
jframe.setLocation(250,350);
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.setVisible(true);
JButton button1 = new JButton("添加");
JButton button2 = new JButton("修改");
JButton button3 = new JButton("查询");
JButton button4 = new JButton("删除");
JButton button5 = new JButton("浏览");
FlowLayout flow = new FlowLayout(FlowLayout.LEFT,10,10);
JPanel panel = new JPanel(flow);
panel.add(button1);
panel.add(button2);
panel.add(button3);
panel.add(button4);
panel.add(button5);
panel.add(title);
panel.add(pic);
jframe.add(panel);
try{
file.createNewFile();
System.out.println("creat ok!");
}
catch (IOException e){
System.out.println("creat go die!");
e.printStackTrace();
}
button1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Add add = new Add();
}
});
button2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Change change = new Change();
}
});
button3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Ask ask = new Ask();
}
});
button4.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Delete delete = new Delete();
}
});
button5.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Look look = new Look();
}
});
}
}
Add是添加功能
package JavaStuIO;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.TreeMap;
import java.io.*;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import JavaStuIO.WindowIO;
public class Add extends JFrame{
JLabel jlnumber = new JLabel("学号：");
JLabel jlname = new JLabel("姓名：");
JLabel jlsex = new JLabel("性别：");
JLabel jlbirthday = new JLabel("出生日期：");
JLabel jldepartment = new JLabel("学院：");
JTextField jtnumber = new JTextField("",20);
JTextField jtname = new JTextField("",20);
JTextField jtsex = new JTextField("",20);
JTextField jtbirthday = new JTextField("",20);
JTextField jtdepartment = new JTextField("",20);
JButton buttonadd = new JButton("添加");
JButton buttonreturn = new JButton("返回");
public Add() {
//TreeMap<String,student> tm = new TreeMap<String,student>();
JPanel jpnumber = new JPanel();
JPanel jpname = new JPanel();
JPanel jpsex = new JPanel();
JPanel jpbirthday = new JPanel();
JPanel jpdepartment = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpname.add(jlname);
jpname.add(jtname);
jpsex.add(jlsex);
jpsex.add(jtsex);
jpbirthday.add(jlbirthday);
jpbirthday.add(jtbirthday);
jpdepartment.add(jldepartment);
jpdepartment.add(jtdepartment);
jpforbutton.add(buttonadd);
jpforbutton.add(buttonreturn);
buttonadd.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//Add
// File file =new File("E:\\java用文件","file.txt");
//
// String name = jtname.getText() + " ";
// String number = jtnumber.getText() + " ";
// String sex = jtsex.getText() + " ";
// String birthday = jtbirthday.getText() + " ";
// String department = jtdepartment.getText()+"\r\n";
//
// student stu = new student(number,name,sex,birthday,department);
//
// Writer out = null;
// try{
// out = new FileWriter(file,true);
// out.write(stu.number);
// out.write(stu.name);
// out.write(stu.sex);
// out.write(stu.birthday);
// out.write(stu.department);
//
//
// out.close();
// System.out.println("write ok!");
// }catch (IOException ee){
// System.out.println("write go die!");
// ee.printStackTrace();
//
// }
File file =new File("E:\\java用文件","file.txt");
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(file); //
ois = new ObjectInputStream(fin); //
TreeMap<String,student> tm = (TreeMap)ois.readObject(); //???
fin.close();
ois.close();
//insert
String name = jtname.getText();
String number = jtnumber.getText();
String sex = jtsex.getText();
String birthday = jtbirthday.getText();
String department = jtdepartment.getText();
student stu = new student(number,name,sex,birthday,department);
FileOutputStream fout = null;
ObjectOutputStream oos = null;
try{
fout = new FileOutputStream(file); //
oos = new ObjectOutputStream(fout); //
tm.put(stu.number,stu);
oos.writeObject(tm);
fout.close();
oos.close();
System.out.println("write ok!!!");
JOptionPane.showMessageDialog(null,"世界线已经发生了变动 el psy congroo！");
}catch (Exception er){
er.printStackTrace();
System.out.println("writeobject go die");
}
//
}catch(Exception et){
System.out.println("go die!");
et.printStackTrace();
}
jtnumber.setText(null);
jtname.setText(null);
jtsex.setText(null);
jtbirthday.setText(null);
jtdepartment.setText(null);
//TreeMap<String,student> tm = new TreeMap<String,student>();
// String name = jtname.getText();
// String number = jtnumber.getText();
// String sex = jtsex.getText();
// String birthday = jtbirthday.getText();
// String department = jtdepartment.getText();
//
// student stu = new student(number,name,sex,birthday,department);
//
//
//
// FileOutputStream fout = null;
// ObjectOutputStream oos = null;
// try{
// fout = new FileOutputStream(file); //
// oos = new ObjectOutputStream(fout); //
//
// tm.put(stu.number,stu);
//
// oos.writeObject(tm);
//
// fout.close();
// oos.close();
//
// System.out.println("write ok!!!");
//
//
// }catch (Exception er){
// er.printStackTrace();
// System.out.println("writeobject go die");
// }
//
// jtnumber.setText(null);
// jtname.setText(null);
// jtsex.setText(null);
// jtbirthday.setText(null);
// jtdepartment.setText(null);
//add end
//
//
}}
);
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
}
});
this.setTitle("添加学生信息");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpname);
this.add(jpsex);
this.add(jpbirthday);
this.add(jpdepartment);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Ask是查询
package JavaStuIO;
import java.sql.*;
import java.util.TreeMap;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import JavaStuIO.WindowIO;
public class Ask extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
JLabel jlnumber = new JLabel("学号：");
JLabel jlname = new JLabel("姓名：");
JLabel jlsex = new JLabel("性别：");
JLabel jlbirthday = new JLabel("出生日期：");
JLabel jldepartment = new JLabel("学院：");
JTextField jtnumber = new JTextField("",20);
JLabel jname = new JLabel();
JLabel jsex = new JLabel();
JLabel jbirthday = new JLabel();
JLabel jdepartment = new JLabel();
JButton buttonask = new JButton("查询");
JButton buttonreturn = new JButton("返回");
public Ask() {
JPanel jpnumber = new JPanel();
JPanel jpname = new JPanel();
JPanel jpsex = new JPanel();
JPanel jpbirthday = new JPanel();
JPanel jpdepartment = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpname.add(jlname);
jpname.add(jname);
jpsex.add(jlsex);
jpsex.add(jsex);
jpbirthday.add(jlbirthday);
jpbirthday.add(jbirthday);
jpdepartment.add(jldepartment);
jpdepartment.add(jdepartment);
jpforbutton.add(buttonask);
jpforbutton.add(buttonreturn);
buttonask.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//ask
String number = jtnumber.getText();
File file =new File("E:\\java用文件","file.txt");
//TreeMap<String,student> tm = new TreeMap<String,student>();
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(file); //
ois = new ObjectInputStream(fin); //
TreeMap<String,student> tm = (TreeMap)ois.readObject(); //???
student stu = (student)tm.get(number);
if(tm.containsKey(number))
{
jname.setText(stu.name);
jsex.setText(stu.sex);
jbirthday.setText(stu.birthday);
jdepartment.setText(stu.department);
}
else
{
System.out.println("number is not exist!");
JOptionPane.showMessageDialog(null,"学号:excuse me?",
"warning",JOptionPane.WARNING_MESSAGE);
}
fin.close();
ois.close();
}catch(Exception et){
System.out.println("go die!");
et.printStackTrace();
}
//end ask
}}
);
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//Window window = new Window();
}
});
this.setTitle("查询学生信息");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpname);
this.add(jpsex);
this.add(jpbirthday);
this.add(jpdepartment);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Change是修改
package JavaStuIO;
import java.sql.*;
import java.util.TreeMap;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import JavaStuIO.WindowIO;
public class Change extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
JLabel jlnumber = new JLabel("学号：");
JLabel jlname = new JLabel("姓名：");
JLabel jlsex = new JLabel("性别：");
JLabel jlbirthday = new JLabel("出生日期：");
JLabel jldepartment = new JLabel("学院：");
JTextField jtnumber = new JTextField("",20);
JTextField jtname = new JTextField("",20);
JTextField jtsex = new JTextField("",20);
JTextField jtbirthday = new JTextField("",20);
JTextField jtdepartment = new JTextField("",20);
JButton buttonchange = new JButton("修改");
JButton buttonreturn = new JButton("返回");
public Change() {
JPanel jpnumber = new JPanel();
JPanel jpname = new JPanel();
JPanel jpsex = new JPanel();
JPanel jpbirthday = new JPanel();
JPanel jpdepartment = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpname.add(jlname);
jpname.add(jtname);
jpsex.add(jlsex);
jpsex.add(jtsex);
jpbirthday.add(jlbirthday);
jpbirthday.add(jtbirthday);
jpdepartment.add(jldepartment);
jpdepartment.add(jtdepartment);
jpforbutton.add(buttonchange);
jpforbutton.add(buttonreturn);
buttonchange.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String number = jtnumber.getText();
String name = jtname.getText();
String sex = jtsex.getText();
String birthday = jtbirthday.getText();
String department = jtdepartment.getText();
//change
File file = new File ("E:\\java用文件","file.txt");
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(file); //
ois = new ObjectInputStream(fin); //
TreeMap<String,student> tm = (TreeMap)ois.readObject(); //???
fin.close();
ois.close();
//insert
if(tm.containsKey(number)){
student stu = new student(number,name,sex,birthday,department);
tm.put(stu.number,stu);
FileOutputStream fout = null;
ObjectOutputStream oos = null;
try{
fout = new FileOutputStream(file);
oos = new ObjectOutputStream(fout);
oos.writeObject(tm);
oos.close();
JOptionPane.showMessageDialog(null,"世界线已经发生了变动 el psy congroo！");
}catch (IOException er){
er.printStackTrace();
System.out.println("writeobject go die");
}
}
else{
System.out.println("number is not exist!");
JOptionPane.showMessageDialog(null,"学号:excuse me?",
"warning",JOptionPane.WARNING_MESSAGE);
}
//
}catch(Exception et){
System.out.println("go die!");
et.printStackTrace();
}
//TreeMap<String,student> tm = new TreeMap<String,student>();
jtnumber.setText(null);
jtname.setText(null);
jtsex.setText(null);
jtbirthday.setText(null);
jtdepartment.setText(null);
//change end
}
});
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//Window window = new Window();
}
});
this.setTitle("修改学生信息");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpname);
this.add(jpsex);
this.add(jpbirthday);
this.add(jpdepartment);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Delete是删除功能
package JavaStuIO;
import java.sql.*;
import java.util.TreeMap;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.html.HTMLDocument.Iterator;
import java.io.*;
import JavaStuIO.WindowIO;
import JavaStuIO.Add;
public class Delete extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
//TreeMap<String,student> tm = new TreeMap<String,student>(); //treemap
JLabel jlnumber = new JLabel("学号：");
JTextField jtnumber = new JTextField("",20);
JButton buttondelete = new JButton("删除");
JButton buttonreturn = new JButton("返回");
public Delete() {
JPanel jpnumber = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpforbutton.add(buttondelete);
jpforbutton.add(buttonreturn);
buttondelete.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//delete
String number = jtnumber.getText();
File file =new File("E:\\java用文件","file.txt");
//TreeMap<String,student> tm = new TreeMap<String,student>();
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(file); //
ois = new ObjectInputStream(fin); //
TreeMap<String,student> tm = (TreeMap)ois.readObject(); //???
//insert
if(tm.containsKey(number))
{
tm.remove(number); //remove
System.out.println("delete ok!!!");
jtnumber.setText(null);
FileOutputStream fout = null;
ObjectOutputStream oos = null;
try{
fout = new FileOutputStream(file); //
oos = new ObjectOutputStream(fout); //
oos.writeObject(tm); //
oos.close();
JOptionPane.showMessageDialog(null,"这个人已经不存在了呢 ");
}catch (IOException er){
er.printStackTrace();
System.out.println("writeobject go die");
}
}
else
{
System.out.println("number is not exist!");
JOptionPane.showMessageDialog(null,"学号:excuse me?",
"warning",JOptionPane.WARNING_MESSAGE);
}
//insert end
fin.close();
ois.close();
}catch(Exception et){
System.out.println("go die!");
et.printStackTrace();
}
// if(tm.isEmpty())
// {
// System.out.println("!!!!!!!!!!!!");
//
// }
//delete end E:\\java用文件","file.txt
}
});
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//Window window = new Window();
}
});
this.setTitle("删除学生信息");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Look是浏览功能
package JavaStuIO;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.io.*;
import JavaStuIO.WindowIO;
public class Look extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
Connection conn = null;
PreparedStatement ps = null;
ResultSet res = null;
//JButton buttonlook = new JButton("浏览");
//JButton buttonreturn = new JButton("返回");
JTable jtable;
JScrollPane jscrollpane = new JScrollPane();
Vector columnNames = null;
Vector rowData = null;
public Look() {
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
columnNames = new Vector();
columnNames.add("学号");
columnNames.add("姓名");
columnNames.add("性别");
columnNames.add("出生日期");
columnNames.add("学院");
rowData = new Vector();
JTextArea jtext = new JTextArea(16,30);
//jpforbutton.add(buttonlook);
//jpforbutton.add(buttonreturn);
File file =new File("E:\\java用文件","file.txt");
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(file); //
ois = new ObjectInputStream(fin); //
TreeMap<String,student> tm = (TreeMap)ois.readObject(); //???
//insert
if(tm.isEmpty())
{
System.out.println("nobody here!");
JOptionPane.showMessageDialog(null,"还没有人惹");
}
else
{
Set<Map.Entry<String, student>> tmSet = tm.entrySet();
Iterator<Map.Entry<String,student>> treeIt = tmSet.iterator();
while(treeIt.hasNext())
{
Map.Entry<String , student> treeEntry = treeIt.next();
Vector hang = new Vector();
student stu = treeEntry.getValue();
hang.add(stu.number);
hang.add(stu.name);
hang.add(stu.sex);
hang.add(stu.birthday);
hang.add(stu.department);
rowData.add(hang);
}
}
//insert end
fin.close();
ois.close();
}catch(Exception et){
System.out.println("go die!");
et.printStackTrace();
}
jtable = new JTable(rowData,columnNames);
jscrollpane = new JScrollPane(jtable);
this.add(jscrollpane);
this.setTitle("浏览学生信息");
this.setLayout(new GridLayout(2,5));
this.add(jpforbutton);
this.setLocation(300,300);
this.setSize(500,300);
this.setVisible(true);
this.setResizable(false);
}
}
今天的文章java简单学生管理系统_编写学生成绩管理系统分享到此就结束了，感谢您的阅读，如果确实帮到您，您可以动动手指转发给其他人。
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