如何把java 学生管理数据库 下载_java学生管理系统（入门级,不需要安装数据库,用txt存取的数据）...

【实例简介】学生管理系统，java代码。用txt文件进行存取， 结构简单，代码也比较简单。

【实例截图】

【核心代码】

package student;

import java.awt.BorderLayout;

import javax.swing.ButtonGroup;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextField;

import javax.swing.table.DefaultTableModel;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class Jiemain {

private JPanel panel1=new JPanel();

private JFrame frame=new JFrame();

private ImageIcon bg = new ImageIcon("img/background.jpg");

public WriterRead wr=new WriterRead();

public Information ints=new Information();

public Seek seek=new Seek();

public String[][] students=wr.getxueshengs();

public String[] interest=ints.getinterest();

public void begin() {

// 加载背景图片

JLabel label = new JLabel(bg);

//把标签的大小位置设置为图片刚好填充整个面

label.setBounds(0,0,bg.getIconWidth(),bg.getIconHeight());

frame.setSize(bg.getIconWidth(),bg.getIconHeight());

//添加图片到frame的第二层

frame.getLayeredPane().add(label,new Integer(Integer.MIN_VALUE));

//获取frame的最上层面板为了设置其背景颜色(JPanel有设置透明的方法)

JPanel jp=(JPanel)frame.getContentPane();

jp.setOpaque(false);

//设置透明 //测试用的JPanel

frame.setLocation(400,200);

frame.setVisible(true);

panel1.setOpaque(false);//也要让他透明

panel1.setLayout(null);

login();

}

private void login()

{

panel1.removeAll();

JButton button1_1=new JButton("增加删除修改学生兴趣");

button1_1.setSize(200, 50);

button1_1.setLocation(420, 50);

JButton button1_2=new JButton("查询或修改学生信息");

button1_2.setSize(200, 50);

button1_2.setLocation(420, 150);

JButton button1_3=new JButton("添加学生信息");

button1_3.setSize(200, 50);

button1_3.setLocation(420, 250);

JButton button1_4=new JButton("删除学生信息");

button1_4.setSize(200, 50);

button1_4.setLocation(420, 350);

JButton button1_5=new JButton("查看所有学生信息");

button1_5.setSize(200, 50);

button1_5.setLocation(420, 450);

button1_1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

rewrite_insterst();

}

});

button1_2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

rewrite_student();

}

});

button1_3.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

increase_student();

}

});

button1_4.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

delete_student();

}

});

button1_5.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

show_all_students();

}

});

panel1.add(button1_1);

panel1.add(button1_2);

panel1.add(button1_3);

panel1.add(button1_4);

panel1.add(button1_5);

panel1.repaint();

frame.add(panel1);

frame.setVisible(true);

}

public void rewrite_insterst()

{

panel1.removeAll();

JButton button0=new JButton("返回");

button0.setSize(100, 50);

button0.setLocation(40, 0);

JButton button2_1=new JButton("增加学生兴趣");

button2_1.setSize(200, 50);

button2_1.setLocation(420, 50);

JButton button2_2=new JButton("删除学生兴趣");

button2_2.setSize(200, 50);

button2_2.setLocation(420, 150);

JButton button2_3=new JButton("修改学生兴趣");

button2_3.setSize(200, 50);

button2_3.setLocation(420, 250);

button0.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

login();

}

});

button2_1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

increase_interest();

}

});

button2_2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

delete_interest();

}

});

button2_3.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

change_interest();

}

});

panel1.add(button0);

panel1.add(button2_1);

panel1.add(button2_2);

panel1.add(button2_3);

panel1.repaint();

frame.setVisible(true);

}

public void increase_interest()

{

String s=JOptionPane.showInputDialog("请输入:");

try

{

ints.write(s);

JOptionPane.showMessageDialog(null, "添加成功","添加学生兴趣", JOptionPane.CLOSED_OPTION);

}

catch(Exception e){

e.toString();

JOptionPane.showMessageDialog(null, "添加出错","添加学生兴趣", JOptionPane.ERROR_MESSAGE);

}

}

public void delete_interest()

{

String s=JOptionPane.showInputDialog("请输入:");

try

{

int k=0;

for(int i=0;i

{

if(interest[i].equals(s))

break;

k ;

}

int b=ints.change(k,"-");

if(b==0)

JOptionPane.showMessageDialog(null, "兴趣中没有这一项","删除学生兴趣", JOptionPane.ERROR_MESSAGE);

else

JOptionPane.showMessageDialog(null, "删除成功","删除学生兴趣", JOptionPane.CLOSED_OPTION);

}

catch(Exception e){

e.toString();

JOptionPane.showMessageDialog(null, "删除出错","删除学生兴趣", JOptionPane.ERROR_MESSAGE);

}

}

public void change_interest()

{

String s=JOptionPane.showInputDialog("请输入要修改的兴趣:");

String t=JOptionPane.showInputDialog("请输入要修改后的兴趣:");

try

{

int k=0;

for(int i=0;i

{

if(interest[i].equals(s))

break;

k ;

}

int b=ints.change(k,t);

if(b==0)

JOptionPane.showMessageDialog(null, "兴趣中没有这一项","改变学生兴趣", JOptionPane.ERROR_MESSAGE);

else

JOptionPane.showMessageDialog(null, "改变成功","改变学生兴趣", JOptionPane.CLOSED_OPTION);

}

catch(Exception e){

e.toString();

JOptionPane.showMessageDialog(null, "删除出错","删除学生兴趣", JOptionPane.ERROR_MESSAGE);

}

}

public void rewrite_student()

{

panel1.removeAll();

JButton button0=new JButton("返回");

button0.setSize(100, 50);

button0.setLocation(40, 0);

JButton button2_1=new JButton("学号查询学生");

button2_1.setSize(200, 50);

button2_1.setLocation(420, 100);

JButton button2_2=new JButton("关键字查找学生");

button2_2.setSize(200, 50);

button2_2.setLocation(420, 250);

JButton button2_3=new JButton("按兴趣查找学生");

button2_3.setSize(200, 50);

button2_3.setLocation(420, 400);

JTextField textField1=new JTextField();

textField1.setSize(300, 30);

textField1.setLocation(420, 70);

JTextField textField2=new JTextField();

textField2.setSize(300, 30);

textField2.setLocation(420, 220);

JTextField textField3=new JTextField();

textField3.setSize(300, 30);

textField3.setLocation(420, 370);

button0.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

login();

}

});

button2_1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入学号:");

String[][] ss=seek.findstudents(s);

chaozuo(ss);

}

});

button2_2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入关键字:");

String[][] ss=seek.findstudents(s);

chaozuo(ss);

}

});

button2_3.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入兴趣:");

String[][] ss=seek.findbyinterest(s);

chaozuo(ss);

}

});

panel1.add(button0);

panel1.add(button2_1);

panel1.add(button2_2);

panel1.add(button2_3);

panel1.repaint();

frame.setVisible(true);

}

@SuppressWarnings({ "null", "unchecked" })

public void increase_student()

{

panel1.removeAll();

JLabel label1 = new JLabel();

label1.setText("学生学号");

label1.setSize(300, 30);

label1.setLocation(400, 10);

JButton button0=new JButton("返回");

button0.setSize(100, 50);

button0.setLocation(40,0);

button0.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

login();

}

});

JTextField textField1=new JTextField();

textField1.setSize(300, 30);

textField1.setLocation(400, 50);

JLabel label2 = new JLabel();

label2.setText("学生姓名");

label2.setSize(300, 30);

label2.setLocation(400, 110);

JTextField textField2=new JTextField();

textField2.setSize(300, 30);

textField2.setLocation(400, 150);

JLabel nianji = new JLabel();

nianji.setText("请选择年纪");

nianji.setSize(300, 30);

nianji.setLocation(400, 210);

@SuppressWarnings("rawtypes")

JComboBox comboBox=new JComboBox();

comboBox.addItem("2012");

comboBox.addItem("2013");

comboBox.addItem("2014");

comboBox.addItem("2015");

comboBox.addItem("2016");

comboBox.addItem("2017");

comboBox.setSize(100, 40);

comboBox.setLocation(400, 250);

JLabel label3 = new JLabel();

label3.setText("学生专业");

label3.setSize(300, 30);

label3.setLocation(400, 310);

JTextField textField3=new JTextField();

textField3.setSize(300, 30);

textField3.setLocation(400, 350);

JLabel label4 = new JLabel();

label4.setText("请选择性别");

label4.setSize(100, 30);

label4.setLocation(350, 380);

JRadioButton s1=new JRadioButton("男",true);

JRadioButton s2=new JRadioButton("女");

ButtonGroup bg = new ButtonGroup();

bg.add(s1);

bg.add(s2);

JPanel jp1=new JPanel();

jp1.setOpaque(false);

jp1.setSize(300, 100);

jp1.setLocation(450, 380);

jp1.add(s1);

jp1.add(s2);

JCheckBox[] its= new JCheckBox[interest.length];

JLabel label5=new JLabel();

label5.setText("请选择兴趣");

label5.setSize(100, 30);

label5.setLocation(350, 400);

JPanel jp2=new JPanel();

jp2.setLocation(450, 430);

jp2.setSize(300, 150);

jp2.setOpaque(false);

for(int i=0;i

{

its[i]=new JCheckBox(interest[i]);

jp2.add(its[i],BorderLayout.CENTER);

}

JButton button1=new JButton("确定添加");

button1.setSize(100, 50);

button1.setLocation(400, 580);

button1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String id,name,sex,year,major,like="";

id=textField1.getText();

name=textField2.getText();

major=textField3.getText();

year=comboBox.getSelectedItem().toString();

if(s1.isSelected())

sex="男";

else sex="女";

for(int i=0;i

{

if(its[i].isSelected())

like =Integer.toString(i) ";";

}

if(id.equals("")||!id.matches("[0-9] "))

JOptionPane.showMessageDialog(null, "学号为空或不是纯数字","添加学生信息", JOptionPane.ERROR_MESSAGE);

else if(name.equals(""))

JOptionPane.showMessageDialog(null, "姓名为空","添加学生信息", JOptionPane.ERROR_MESSAGE);

else if(year.equals(""))

JOptionPane.showMessageDialog(null, "年级为空","添加学生信息", JOptionPane.ERROR_MESSAGE);

else if(major.equals(""))

JOptionPane.showMessageDialog(null, "专业为空", "添加学生信息", JOptionPane.ERROR_MESSAGE);

else {

wr.write(id "|" name "|" sex "|" year "|" major "|" like);

JOptionPane.showMessageDialog(null, "添加成功","添加学生信息", JOptionPane.CLOSED_OPTION);

}

}

});

panel1.add(textField1);

panel1.add(textField2);

panel1.add(textField3);

panel1.add(jp1);

panel1.add(jp2);

panel1.add(button0);

panel1.add(button1);

panel1.add(comboBox);

panel1.add(label1);

panel1.add(label2);

panel1.add(label3);

panel1.add(label4);

panel1.add(label5);

panel1.add(nianji);

panel1.repaint();

frame.setVisible(true);

}

public void delete_student()

{

panel1.removeAll();

JButton button0=new JButton("返回");

button0.setSize(100, 50);

button0.setLocation(40, 0);

JButton button2_1=new JButton("学号删除学生");

button2_1.setSize(200, 50);

button2_1.setLocation(420, 50);

JButton button2_2=new JButton("关键字删除学生");

button2_2.setSize(200, 50);

button2_2.setLocation(420, 150);

JButton button2_3=new JButton("按兴趣删除学生");

button2_3.setSize(200, 50);

button2_3.setLocation(420, 250);

button0.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

login();

}

});

button2_1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入学号:");

String[][] ss=seek.findstudents(s);

if(ss[0][0]==null)

{

JOptionPane.showMessageDialog(null, "学号为空","删除学生信息", JOptionPane.ERROR_MESSAGE);

}

else

{int j=0;

while(ss[j][0]!=null)

{

wr.delete(Integer.parseInt(ss[j][6]));

j ;

}

JOptionPane.showMessageDialog(null, "删除成功","修改学生信息", JOptionPane.CLOSED_OPTION);

}

}

});

button2_2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入关键字:");

String[][] ss=seek.findstudents(s);

if(ss[0][0]==null)

{

JOptionPane.showMessageDialog(null, "关键字空","删除学生信息", JOptionPane.ERROR_MESSAGE);

}

else

{

int j=0;

while(ss[j][0]!=null)

{

wr.delete(Integer.parseInt(ss[j][6]));

j ;

}

JOptionPane.showMessageDialog(null, "删除成功","删除学生信息", JOptionPane.CLOSED_OPTION);

}

}

});

button2_3.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String s=JOptionPane.showInputDialog("请输入兴趣:");

String[][] ss=seek.findbyinterest(s);

if(ss[0][0]==null)

{

JOptionPane.showMessageDialog(null, "兴趣为空","删除学生信息", JOptionPane.ERROR_MESSAGE);

}

else

{

int j=0;

while(ss[j][0]!=null)

{

wr.delete(Integer.parseInt(ss[j][6]));

j ;

}

JOptionPane.showMessageDialog(null, "删除成功","修改学生信息", JOptionPane.CLOSED_OPTION);

}

}

});

panel1.add(button0);

panel1.add(button2_1);

panel1.add(button2_2);

panel1.add(button2_3);

panel1.repaint();

frame.setVisible(true);

}

public void show_all_students()

{

JTable table;

JButton bt1 = new JButton("修改");

JButton bt2 = new JButton("删除");

JPanel btnPanel = new JPanel(new java.awt.GridLayout(1, 2));

btnPanel.add(bt1);

btnPanel.add(bt2);

DefaultTableModel defaultTableModel;

JScrollPane scrollPane;

scrollPane = new JScrollPane();

scrollPane.setSize(600, 400);

//创建一个只有表头的表格模型

defaultTableModel = new DefaultTableModel(new Object[][]{},

new String[]{"学号", "姓名", "性别","年级","专业","兴趣"});

for(int i=0;students[i][0]!=null;i )

{

String[] in=students[i][5].split("\\;");

String k=new String();

try {

int[] a=new int[in.length];

for(int j=0;j

{

a[j] = Integer.parseInt(in[j]);

if(interest[a[j]]!="-")

k =interest[a[j]] "--";

}

} catch (NumberFormatException e) {

e.printStackTrace();

}

defaultTableModel.insertRow(i,new Object[]{

students[i][0], students[i][1], students[i][2],students[i][3],students[i][4],k,});

}

//将students中非空元素插入表中

table = new JTable(defaultTableModel);

table.setSize(600, 400);

table.setLocation(500, 200);

table.updateUI();

JScrollPane jspane=new JScrollPane(table);

JFrame jf=new JFrame();

jf.setSize(600, 500);

jf.setLocation(500, 200);

jf.add("Center",jspane);

//jf.add("South",btnPanel);

//jf.add(bt2);

jf.setVisible(true);

}

public void chaozuo(String[][] ss)

{

JTable table;

JButton bt1 = new JButton("修改");

JButton bt2 = new JButton("删除");

JPanel btnPanel = new JPanel(new java.awt.GridLayout(1, 2));

btnPanel.add(bt1);

btnPanel.add(bt2);

DefaultTableModel defaultTableModel;

JScrollPane scrollPane;

scrollPane = new JScrollPane();

scrollPane.setSize(500, 400);

//创建一个只有表头的表格模型

defaultTableModel = new DefaultTableModel(new Object[][]{},

new String[]{"学号", "姓名", "性别","年级","专业","兴趣"});

for(int i=0;ss[i][0]!=null;i )

{

String[] in=ss[i][5].split("\\;");

String k=new String();

try {

int[] a=new int[in.length];

for(int j=0;j

{

a[j] = Integer.parseInt(in[j]);

if(interest[a[j]]!="-")

k =interest[a[j]] "--";

}

} catch (NumberFormatException e1) {

e1.printStackTrace();

}

defaultTableModel.insertRow(i,new Object[]{

ss[i][0], ss[i][1], ss[i][2],ss[i][3],ss[i][4],k,});

}

//将students中非空元素插入表中

table = new JTable(defaultTableModel);

table.setSize(500, 400);

table.setLocation(500, 200);

table.updateUI();

JScrollPane jspane=new JScrollPane(table);

JFrame jf=new JFrame();

jf.setSize(600, 500);

jf.setLocation(500, 200);

jf.add("Center",jspane);

jf.add("South",btnPanel);

//jf.add(bt2);

jf.setVisible(true);

bt1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

int n=table.getSelectedRow();

panel1.removeAll();

JLabel label1 = new JLabel();

label1.setText("学生学号");

label1.setSize(300, 30);

label1.setLocation(400, 10);

JButton button0=new JButton("返回");

button0.setSize(100, 50);

button0.setLocation(40,0);

button0.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

login();

}

});

JTextField textField1=new JTextField();

textField1.setSize(300, 30);

textField1.setLocation(400, 50);

JLabel label2 = new JLabel();

label2.setText("学生姓名");

label2.setSize(300, 30);

label2.setLocation(400, 110);

JTextField textField2=new JTextField();

textField2.setSize(300, 30);

textField2.setLocation(400, 150);

JLabel nianji = new JLabel();

nianji.setText("请选择年纪");

nianji.setSize(300, 30);

nianji.setLocation(400, 210);

JComboBox comboBox=new JComboBox();

comboBox.addItem("2012");

comboBox.addItem("2013");

comboBox.addItem("2014");

comboBox.addItem("2015");

comboBox.addItem("2016");

comboBox.addItem("2017");

comboBox.setSize(100, 40);

comboBox.setLocation(400, 250);

JLabel label3 = new JLabel();

label3.setText("学生专业");

label3.setSize(300, 30);

label3.setLocation(400, 310);

JTextField textField3=new JTextField();

textField3.setSize(300, 30);

textField3.setLocation(400, 350);

JLabel label4 = new JLabel();

label4.setText("请选择性别");

label4.setSize(100, 30);

label4.setLocation(350, 380);

JRadioButton s1=new JRadioButton("男",true);

JRadioButton s2=new JRadioButton("女");

ButtonGroup bg = new ButtonGroup();

bg.add(s1);

bg.add(s2);

JPanel jp1=new JPanel();

jp1.setOpaque(false);

jp1.setSize(300, 100);

jp1.setLocation(450, 380);

jp1.add(s1);

jp1.add(s2);

JCheckBox[] its= new JCheckBox[interest.length];

JLabel label5=new JLabel();

label5.setText("请选择兴趣");

label5.setSize(100, 30);

label5.setLocation(350, 400);

JPanel jp2=new JPanel();

jp2.setLocation(450, 430);

jp2.setSize(300, 150);

jp2.setOpaque(false);

for(int i=0;i

{

its[i]=new JCheckBox(interest[i]);

jp2.add(its[i],BorderLayout.CENTER);

}

JButton button1=new JButton("确定修改");

button1.setSize(100, 50);

button1.setLocation(400, 580);

button1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String id,name,sex,year,major,like="";

id=textField1.getText();

name=textField2.getText();

major=textField3.getText();

year=comboBox.getSelectedItem().toString();

if(s1.isSelected())

sex="男";

else sex="女";

for(int i=0;i

{

if(its[i].isSelected())

like =Integer.toString(i) ";";

}

if(id.equals("")||!id.matches("[0-9] "))

JOptionPane.showMessageDialog(null, "学号为空或不是纯数字","修改学生信息", JOptionPane.ERROR_MESSAGE);

else if(name.equals(""))

JOptionPane.showMessageDialog(null, "姓名为空","修改学生信息", JOptionPane.ERROR_MESSAGE);

else if(year.equals(""))

JOptionPane.showMessageDialog(null, "年级为空","修改学生信息", JOptionPane.ERROR_MESSAGE);

else if(major.equals(""))

JOptionPane.showMessageDialog(null, "专业为空", "修改学生信息", JOptionPane.ERROR_MESSAGE);

else {

String xiugai=new String();

for(int m=0;m<5;m )

{

xiugai =ss[n][m] "|";

}

xiugai =ss[n][5];

System.out.println(xiugai);

wr.change(Integer.parseInt(ss[n][6]),id "|" name "|" sex "|" year "|" major "|" like);

JOptionPane.showMessageDialog(null, "修改成功","修改学生信息", JOptionPane.CLOSED_OPTION);

}

}

});

panel1.add(textField1);

panel1.add(textField2);

panel1.add(textField3);

panel1.add(jp1);

panel1.add(jp2);

panel1.add(button0);

panel1.add(button1);

panel1.add(comboBox);

panel1.add(label1);

panel1.add(label2);

panel1.add(label3);

panel1.add(label4);

panel1.add(label5);

panel1.add(nianji);

panel1.repaint();

panel1.repaint();

frame.setVisible(true);

}

});

bt2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

int n=table.getSelectedRow();

int k=Integer.parseInt(ss[n][6]);

wr.delete(k);

JOptionPane.showMessageDialog(null, "删除成功","修改学生信息", JOptionPane.CLOSED_OPTION);

}

});

}

}