学生信息管理系统-GUI

本人java 初学者，使用了已经过时的GUI图形用户界面。

程序运了IO进行数据的读写，没有涉及到数据库的使用。

写道最后发现有很多的缺点，面向对象的程序设计思想很多地方体现的不是很到位，还有频繁的操作磁盘文件。

也参考过许多网上许多大佬的方法。

算是给自己学java半年以来的一个说法吧。

最后将代码分享给大家，一起学习！

package MyStu;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.*;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;


import javax.swing.*;


class Login extends JFrame implements ActionListener{




static ArrayList<Student> as = new ArrayList<Student>();

JButton b1,b2=null;
JPanel jp1,jp2,jp3=null;
JTextField jtf=null;
JLabel jlb1,jlb2=null;
JPasswordField pwf=null;
final String user="123";  
    final String psd="123";  

public Login(){
Image icon=Toolkit.getDefaultToolkit().getImage("E://1.gif");
this.setIconImage(icon);

b1=new JButton("登陆");

b1.setFont(new Font("华文中宋", Font.BOLD, 15));
b2=new JButton("清除");
b2.setFont(new Font("华文中宋", Font.BOLD, 15));
b1.setBorder(null);


b2.setBorder(null);
b1.addActionListener(this);
b2.addActionListener(this);

jp1=new JPanel();  
jp1.setBackground(Color.cyan);
    jp2=new JPanel();  
    jp2.setBackground(Color.YELLOW);
    jp3=new JPanel();  
    jp3.setBackground(Color.orange);
    
    jlb1=new JLabel("用户名：");  
    jlb2=new JLabel("密    码：");  
    jlb1.setFont(new Font("华文行楷", Font.BOLD, 20));
    jlb2.setFont(new Font("华文行楷", Font.BOLD, 20));
    
jtf=new JTextField(10);

pwf=new JPasswordField(10);

jp1.add(jlb1);
jp1.add(jtf);

jp2.add(jlb2);
jp2.add(pwf);

jp3.add(b1);
jp3.add(b2);

this.add(jp1);  
    this.add(jp2);  
    this.add(jp3);   
     
       this.setLayout(new GridLayout(3,1));  
        
     this.setTitle("学生信息管理系统"); 
      
       this.setSize(300,200);  
        
       this.setLocation(200, 150);  
        
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            
        
       this.setVisible(true);  
       this.setResizable(false);  
}
public void actionPerformed(ActionEvent e){

if(e.getActionCommand()=="登陆"){

stulogin();
}else if (e.getActionCommand()=="清除") {
clear();
}

}

                            


public void stulogin(){
if(user.equals(jtf.getText())&&psd.equals(pwf.getText())){
JOptionPane.showMessageDialog(null,"登录成功！","系统提示",JOptionPane.WARNING_MESSAGE);
clear();
 
dispose();
Menu1 ui=new Menu1();



}else if(jtf.getText().isEmpty()&&pwf.getText().isEmpty())  
        {  
            JOptionPane.showMessageDialog(null,"请输入用户名和密码！","提示消息",JOptionPane.WARNING_MESSAGE);  
        }else if(jtf.getText().isEmpty())  
        {  
            JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE);  
        }else if(pwf.getText().isEmpty())  
        {  
            JOptionPane.showMessageDialog(null,"请输入密码！","提示消息",JOptionPane.WARNING_MESSAGE);  
        }else  
        {  
            JOptionPane.showMessageDialog(null,"用户名或者密码错误！\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE);  
            //清空输入框  
            clear();  
        }  

}

public void clear(){
jtf.setText("");
pwf.setText("");
}

}
//---------------------------------------------------------


//Memu功能菜单栏
class Menu1 extends JFrame {
static ArrayList<Student> as = new ArrayList<Student>();
JButton jb1,jb2,jb3,jb4,jb5,jb6=null;  
 JPanel jp1,jp2,jp3=null;  
 JLabel jlb1=null; 
 public  Menu1(){
 
jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
 
jb1=new JButton("添加信息");
jb2=new JButton("删除信息");
jb3=new JButton("查找信息");
jb5=new JButton("查看信息");
jb6=new JButton("退出");
jb1.setFont(new Font("华文中宋", Font.BOLD, 18));
jb2.setFont(new Font("华文中宋", Font.BOLD, 18));
jb3.setFont(new Font("华文中宋", Font.BOLD, 18));
jb5.setFont(new Font("华文中宋", Font.BOLD, 18));
jb6.setFont(new Font("华文中宋", Font.BOLD, 18));
 
jb1.setBorder(null);
jb2.setBorder(null);
jb3.setBorder(null);


jb5.setBorder(null);
jb6.setBorder(null);
 
jlb1=new JLabel("欢迎使用学生信息管理系统");
 jlb1.setHorizontalAlignment(SwingConstants.CENTER);
 jlb1.setFont(new Font("华文行楷", Font.BOLD, 40));
jp1. add(jlb1);
 
 
jp2.add(jb1);
jp2.add(jb2);
jp2.add(jb3);
 


jp3.add(jb5);
jp3.add(jb6);
 
this.add(jp1);
this.add(jp2);
this.add(jp3);
 
this.setLayout(new GridLayout(3,5)); 
 
this.setTitle("学生信息管理系统");  
 
this.setSize(500,400);  
       //设置窗体初始位置  
       this.setLocation(200, 150); 
       //设置当关闭窗口时，保证JVM也退出  
       this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     
       //显示窗体  
       this.setVisible(true);  
       this.setResizable(false);  
       jb1.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="添加信息"){
addinfo_Menu ai=new addinfo_Menu();
ArrayList<Student>as=new ArrayList<Student>();
ai.infor(as);

}
}
  });
       
       
       jb2.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="删除信息"){
Delete_info di=new Delete_info();
di.delete_info();

}
}
       });
       
       jb3.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="查找信息"){
scaninfo si=new scaninfo();
si.Scaninfo();
}
}
       
       
       });
       
      
       
       jb5.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="查看信息"){
readinfo ri=new readinfo();
ri.Readinfo();
}
}
       
       
       });
       
       jb6.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="退出"){
dispose();
Login lg=new Login();
}
}
       
       
       });
 }




public void addinfo(){

}

}








//主类--------------------------------------------------
public class Wenfan{
public   static void main(String[] args){
Login lg=new Login();



}
}




package MyStu;






import java.awt.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.*;


import javax.swing.*;


 class addinfo_Menu extends JFrame implements ActionListener {
ArrayList<Student>as=new ArrayList<Student>();
JButton jb1,jb2,jb3,jb4=null;
JPanel  jp1,jp2,jp3,jp4,jp5,jp6,jp7=null;
JTextField jtf1,jtf2,jtf3,jtf4,jtf5=null;
JLabel jlb1,jlb2,jlb3,jlb4,jlb5,jlb6=null;
 
public void infor(final ArrayList<Student>as){



jb1=new JButton("保存");
jb2=new JButton("返回");
jb3=new JButton("继续添加");
jb4=new JButton("清除文件数据");
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
jb1.setFont(new Font("华文中宋", Font.BOLD, 15));
jb2.setFont(new Font("华文中宋", Font.BOLD, 15));
jb3.setFont(new Font("华文中宋", Font.BOLD, 15));
jb4.setFont(new Font("华文中宋", Font.BOLD, 15));

jp1=new JPanel();  
    jp2=new JPanel();  
    jp3=new JPanel(); 
    jp4=new JPanel();
    jp5=new JPanel();
    jp6=new JPanel();
    jp7=new JPanel();
    jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
jp4.setBackground(Color.cyan);
jp5.setBackground(Color.cyan);
jp6.setBackground(Color.cyan);
jp7.setBackground(Color.cyan);


    
    
    
    jlb1=new JLabel("输入学生信息");  
    jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));
    jlb2=new JLabel("姓名：");  
    jlb3=new JLabel("性别：");  
    jlb4=new JLabel("年龄：");  
    jlb5=new JLabel("学号：");  
    jlb6=new JLabel("成绩：");  
    
    jlb1.setFont(new Font("华文行楷", Font.BOLD, 25));
    jlb2.setFont(new Font("华文行楷", Font.BOLD, 25));
    jlb3.setFont(new Font("华文行楷", Font.BOLD, 25));
    jlb4.setFont(new Font("华文行楷", Font.BOLD, 25));
    jlb5.setFont(new Font("华文行楷", Font.BOLD, 25));
    jlb6.setFont(new Font("华文行楷", Font.BOLD, 25));
    
jtf1=new JTextField(10);
jtf2=new JTextField(10);
jtf3=new JTextField(10);
jtf4=new JTextField(10);
jtf5=new JTextField(10);



jp1.add(jlb1);

jp2.add(jlb2);
jp2.add(jtf1);

jp3.add(jlb3);
jp3.add(jtf2);

jp4.add(jlb4);
jp4.add(jtf3);

jp5.add(jlb5);
jp5.add(jtf4);

jp6.add(jlb6);
jp6.add(jtf5);

jp7.add(jb1);
jp7.add(jb3);
jp7.add(jb4);
jp7.add(jb2);

this.add(jp1);  
    this.add(jp2);  
    this.add(jp3);  
    this.add(jp4);  
    this.add(jp5);  
    this.add(jp6); 
    this.add(jp7);  
  
    //设置布局管理器  
       this.setLayout(new GridLayout(7,1));  
       //给窗口设置标题
     this.setTitle("学生成绩管理系统"); 
     //设置窗体大小  
       this.setSize(500,400);  
       //设置窗体初始位置  
       this.setLocation(200, 150);  
       //显示窗体  
       this.setVisible(true);  
       this.setResizable(false);  
       
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub

if(e.getActionCommand()=="保存"){
try {
File stu_csv = new File("E://stu.txt");   
if(stu_csv.exists())    //
   stu_csv.delete();  
stu_csv.createNewFile();
   String stu_name,stu_gendar,stu_age,stu_number,stu_score;
   stu_name=jtf1.getText();
stu_gendar=jtf2.getText();
stu_age=jtf3.getText();
stu_number=jtf4.getText();
stu_score=jtf5.getText(); 
as.add(new Student(stu_name,stu_gendar,stu_age,stu_number,stu_score));
BufferedWriter bfw = new BufferedWriter(new FileWriter(stu_csv,true));
   //bfw.newLine();  
   for (Student stu : as) {  
    System.out.println(stu.name+","+stu.gendar+","+stu.age+","+stu.number+","+stu.score);
       bfw.write(stu.name+","+stu.gendar+","+stu.age+","+stu.number+","+stu.score+"\r\n");  
   }  
   bfw.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}  
JOptionPane.showMessageDialog(null,"已保存姓名为："+jtf1.getText()+"的信息","系统提示",JOptionPane.INFORMATION_MESSAGE); 
}else if(e.getActionCommand()=="继续添加"){
reset();
}else if(e.getActionCommand()=="清除文件数据"){
try {
File stu_csv = new File("E://stu.txt");  
if(stu_csv.exists())      
   stu_csv.delete();  
stu_csv.createNewFile();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}  

}else if(e.getActionCommand()=="返回"){
dispose();

}
}





public  void reset(){
jtf1.setText("");
jtf2.setText("");
jtf3.setText("");
jtf4.setText("");
}




}  


 
 class Student{
String  name;
String gendar;
String number;
String age;
String score;
public Student(String name,String gendar,String age,String number,String score){
this.name=name;
this.gendar=gendar;
this.age=age;
this.number=number;                      
this.score=score;
}
 

 
 }







package MyStu;


import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.StringTokenizer;


import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;


 class Delete_info extends JFrame implements ActionListener{
JButton jb1,jb2,jb3,jb4,jb5;
JLabel jlb1,jlb2,jlb3,jlb4;
JPanel jp1,jp2,jp3,jp4,jp5,jp6,jp7;
JTextField jtf1;
public void delete_info(){
jp1=new JPanel();
jp2=new JPanel();
jp7=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp7.setBackground(Color.cyan);


 
jb1=new JButton("按学号删除");
jb2=new JButton("按姓名删除");
jb5=new JButton("返回");
jb1.addActionListener(this);
jb2.addActionListener(this);
jb5.addActionListener(this);
jb1.setBorder(null);
jb2.setBorder(null);
jb5.setBorder(null);
jb1.setFont(new Font("华文中宋", Font.BOLD, 20));
jb2.setFont(new Font("华文中宋", Font.BOLD, 20));
jb5.setFont(new Font("华文中宋", Font.BOLD, 15));


jlb1=new JLabel("删除信息");  
jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

     jp1.add(jlb1);
     
     jp2.add(jb1);
     jp2.add(jb2);
     
     jp7.add(jb5);
     
     this.add(jp1);
     this.add(jp2);
     this.add(jp7);
     
     this.setLayout(new GridLayout(3,1));
     this.setTitle("删除");
     this.setSize(500,400);
     this.setLocation(200,150);
     this.setVisible(true);
     this.setResizable(false);


}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand()=="按学号删除"){
Delete_Number dn=new Delete_Number();
dn.delete_number();
}else if(e.getActionCommand()=="按姓名删除"){
Delete_Name dne=new Delete_Name();
dne.delete_name();
}else if(e.getActionCommand()=="返回"){

dispose();
}
}




}
 
 class Delete_Number extends JFrame implements ActionListener{
JButton jb1,jb2;
JPanel jp1,jp2,jp3,jp4,jp5;
JTextField jtf1;
JLabel jlb1,jlb2,jlb3;
ArrayList<Student3> as3 = new ArrayList<Student3>();
BufferedWriter bfw;
public void delete_number(){
jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp4=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
jp4.setBackground(Color.cyan);
 
jb1=new JButton("删除");
jb2=new JButton("返回");
jb1.addActionListener(this);
jb2.addActionListener(this);
 
jb1.setBorder(null);
jb2.setBorder(null);
jb1.setFont(new Font("华文中宋", Font.BOLD, 20));
jb2.setFont(new Font("华文中宋", Font.BOLD, 20));
 
 
jtf1=new JTextField(10);


jlb1=new JLabel("删除信息");  
jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

    
    jlb2=new JLabel("请输入学号：");
    jlb2.setFont(new Font("华文行楷", Font.BOLD, 20));
    
    jp1.add(jlb1);
    
    jp2.add(jlb2);
    jp2.add(jtf1);
    jp2.add(jb1);
      
    jp3.add(jb2);
    
    this.add(jp1);
    this.add(jp2);
    this.add(jp3);


    
    this.setLayout(new GridLayout(3,1));
    this.setTitle("删除");
    this.setSize(500,400);
    this.setLocation(200,150);
    this.setVisible(true);
    this.setResizable(false);
    
    try {
File csv = new File("E://stu.txt"); // CSV文件  
BufferedReader br = new BufferedReader(new FileReader(csv)); 
// 读取直到最后一行   
String line = "";
while ((line = br.readLine()) != null) {   
    // 把一行数据分割成多个字段   
    StringTokenizer st1 = new StringTokenizer(line, ",");  
    Student3 st2= new Student3(st1.nextToken(),st1.nextToken(),st1.nextToken(),st1.nextToken(),st1.nextToken());  
    as3.add(st2);  
   
}   
br.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
boolean flag=false;
if(e.getActionCommand()=="删除"){
if(jtf1.getText().isEmpty())  
       {  
           JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE);  
       }
for(Student3 student :as3){
if(student.number.equals(jtf1.getText())){
as3.remove(student);
File txt = new File("E://stu.txt"); // CSV文件  
txt.delete();  
try {
txt.createNewFile();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

flag=true;
break;
}
}


if(flag){
try {
File txt = new File("E://stu.txt");
bfw = new BufferedWriter(new FileWriter(txt,true));
for(Student3 student1 :as3){
bfw.write(student1.name+","+student1.gendar+","+student1.age+","+student1.number+","+student1.score+"\r\n");
System.out.println(student1.name+","+student1.gendar+","+student1.age+","+student1.number+","+student1.score);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null,"已删除学号为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);


try {
bfw.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}else{
JOptionPane.showMessageDialog(null,"无学号为："+jtf1.getText()+"的信息！","提示消息",JOptionPane.WARNING_MESSAGE);
}




}else if(e.getActionCommand()=="返回"){
dispose();
}

}
 
 
 
 }
 
 
 
 
 //--------------------------按姓名删除菜单----------------、
 
 
 class Delete_Name extends JFrame implements ActionListener{
JButton jb1,jb2;
JPanel jp1,jp2,jp3,jp4,jp5;
JTextField jtf1;
JLabel jlb1,jlb2,jlb3;
ArrayList<Student3> as3 = new ArrayList<Student3>();
BufferedWriter bfw;
public void delete_name(){
jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp4=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
 
jb1=new JButton("删除");
jb2=new JButton("返回");
jb1.addActionListener(this);
jb2.addActionListener(this);
jb1.setFont(new Font("华文中宋", Font.BOLD, 20));
jb2.setFont(new Font("华文中宋", Font.BOLD, 20));
 
 
jb1.setBorder(null);
jb2.setBorder(null);


 
jtf1=new JTextField(10);


jlb1=new JLabel("删除信息");  
    jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

    
    jlb2=new JLabel("请输入姓名：");
    jlb2.setFont(new Font("华文行楷", Font.BOLD, 20));
    
    jp1.add(jlb1);
    
    jp2.add(jlb2);
    jp2.add(jtf1);
    jp2.add(jb1);
      
    jp3.add(jb2);
    
    this.add(jp1);
    this.add(jp2);
    this.add(jp3);


    
    this.setLayout(new GridLayout(3,1));
    this.setTitle("删除");
    this.setSize(500,400);
    this.setLocation(200,150);
    this.setVisible(true);
    this.setResizable(false);
    
    try {
File csv = new File("E://stu.txt"); // CSV文件  
BufferedReader br = new BufferedReader(new FileReader(csv)); 
// 读取直到最后一行   
String line = "";
while ((line = br.readLine()) != null) {   
    // 把一行数据分割成多个字段   
    StringTokenizer st1 = new StringTokenizer(line, ",");  
    Student3 st2= new Student3(st1.nextToken(),st1.nextToken(),st1.nextToken(),st1.nextToken(),st1.nextToken());  
    as3.add(st2);  
   
}   
br.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
boolean flag=false;
if(e.getActionCommand()=="删除"){
if(jtf1.getText().isEmpty())  
       {  
           JOptionPane.showMessageDialog(null,"请输入姓名！","提示消息",JOptionPane.WARNING_MESSAGE);  
       }
for(Student3 student :as3){
if(student.name.equals(jtf1.getText())){
as3.remove(student);
File txt = new File("E://stu.txt"); // CSV文件  
txt.delete();  
try {
txt.createNewFile();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
jtf1.setText("");
flag=true;
break;
}
}


if(flag){
try {
File txt = new File("E://stu.txt");
bfw = new BufferedWriter(new FileWriter(txt,true));
for(Student3 student1 :as3){
bfw.write(student1.name+","+student1.gendar+","+student1.age+","+student1.number+","+student1.score+"\r\n");
System.out.println(student1.name+","+student1.gendar+","+student1.age+","+student1.number+","+student1.score);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null,"已删除姓名为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);


try {
bfw.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}else{
JOptionPane.showMessageDialog(null,"无姓名为："+jtf1.getText()+"的信息！","提示消息",JOptionPane.WARNING_MESSAGE);
}




}else if(e.getActionCommand()=="返回"){
dispose();
}

}
 
 
 
 }
 
 
 
 
 
 class Student3{
String  name;
String gendar;
String number;
String age;
String score;
public Student3(String name,String gendar,String age,String number,String score){
this.name=name;
this.gendar=gendar;
this.age=age;
this.number=number;                      
this.score=score;
}
}
 
 


 package MyStu;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.*;


import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;








 class readinfo extends JFrame implements ActionListener {
JLabel jlb;
JButton jb1;
JPanel jp1,jp2;
public void Readinfo(){
jp1=new JPanel();
jp2=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);

jb1=new JButton("返回");
jb1.addActionListener(this);
jb1.setFont(new Font("华文中宋", Font.BOLD, 18));
jb1.setBorder(null);

jlb=new JLabel("所有信息如下");
jlb.setFont(new Font("华文行楷", Font.BOLD, 30));

JTableHeader tableH; 
String col[]={"姓名","性别","年龄","学号","成绩"};  
       final DefaultTableModel tableModel = new DefaultTableModel(col, 0);  
     JTable table = new JTable(tableModel);  
     table.setEnabled(false);  
       JScrollPane pane = new JScrollPane(table); 
       pane.setBackground(Color.cyan);
       
       jp1.add(jlb);
      jp2.add(jb1);

ArrayList<Student1> as1 = new ArrayList<Student1>();
try {
File csv = new File("E://stu.txt"); // CSV文件  
 
BufferedReader br = new BufferedReader(new FileReader(csv));  


  
String line = "";   
while ((line = br.readLine()) != null) {   
       
    StringTokenizer st = new StringTokenizer(line, ",");  
    Student1 st1= new Student1(st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken());  
    as1.add(st1);  
   
}   
br.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}  
this.add(jp1);
this.add(pane);
this.add(jp2);
 

   this.setBackground(Color.cyan);
   this.setLayout(new GridLayout(3,1));
     this.setTitle("显示信息"); 
      
      this.setSize(500,400);  
        
      this.setLocation(200, 150);  
      this.setVisible(true); 
     this.setResizable(false);  
     
       table.setBackground(new Color(144,238,144));  
          table.setForeground(new Color(100,100,100)) ;  
          table.setGridColor(new Color(105 ,105, 105));  
          tableH = table.getTableHeader();  
        
          tableH.setBackground(new Color(200, 200, 200));  

          
          tableH.setForeground(new Color(0,0,205));  
       for (Student1 stu : as1) {  
           Object [] data ={stu.name,stu.gendar,stu.age,stu.number,stu.score};  
           tableModel.addRow(data);  
       }  
       tableModel.fireTableDataChanged();  
        RowSorter<TableModel> sorter = new TableRowSorter<TableModel>(tableModel);  
        table.setRowSorter(sorter);  
        this.getContentPane().add(pane, BorderLayout.CENTER);  
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand()=="返回"){
dispose();
}
}  
 }

 
 class Student1{
String  name;
String gendar;
String number;
String age;
String score;
public Student1(String name,String gendar,String age,String number,String score){
this.name=name;
this.gendar=gendar;
this.age=age;
this.number=number;                      
this.score=score;
}
}
 
 
                 package MyStu;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.StringTokenizer;


import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;










class scaninfo extends JFrame implements ActionListener {
JButton jb1,jb2,jb5;
JLabel jlb1,jlb2,jlb3,jlb4;
JPanel jp1,jp2,jp7;


public void  Scaninfo(){
jp1=new JPanel();
jp2=new JPanel();
jp7=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp7.setBackground(Color.cyan);
 
jb1=new JButton("按学号查找");
jb2=new JButton("按姓名查找");
jb5=new JButton("返回");
jb1.setFont(new Font("华文中宋", Font.BOLD, 20));
jb2.setFont(new Font("华文中宋", Font.BOLD, 20));
jb5.setFont(new Font("华文中宋", Font.BOLD, 15));
jb1.addActionListener(this);
jb2.addActionListener(this);
jb5.addActionListener(this);
jb1.setBorder(null);
jb2.setBorder(null);
jb5.setBorder(null);

jlb1=new JLabel("查找信息");  
jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

    jp1.add(jlb1);
    
    jp2.add(jb1);
    jp2.add(jb2);
    
    jp7.add(jb5);
    
    this.add(jp1);
    this.add(jp2);
    this.add(jp7);
    
    this.setLayout(new GridLayout(3,1));
    this.setTitle("查询");
    this.setSize(500,400);
    this.setLocation(200,150);
    this.setVisible(true);
    this.setResizable(false);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand()=="按学号查找"){
Lookup_number look_n=new Lookup_number();
look_n.lookup_number();
}else if(e.getActionCommand()=="按姓名查找"){
Lookup_name look_ne=new Lookup_name();
look_ne.lookup_name();

}else if(e.getActionCommand()=="返回"){
dispose();
}

}
//---------------按学号查询界面----------------
}


//---------------按学号查询界面----------------
class Lookup_number extends JFrame implements ActionListener{
JButton jb1,jb2;
JPanel jp1,jp2,jp3,jp4,jp5;
JTextField jtf1;
JLabel jlb1,jlb2,jlb3;
JTable jtb;
ArrayList<Student2> as2 = new ArrayList<Student2>();


String col[]={"姓名","性别","年龄","学号","成绩"}; 
final DefaultTableModel tableModel = new DefaultTableModel(col, 0);
public void lookup_number(){

jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp4=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
jp4.setBackground(Color.cyan);
 
JTableHeader tableH; 
JTable table = new JTable(tableModel);  
 table.setEnabled(false);  
 table.setBackground(new Color(144,238,144));  
          table.setForeground(new Color(100,100,100)) ;  
          table.setGridColor(new Color(105 ,105, 105));  
          tableH = table.getTableHeader();  
       
          tableH.setBackground(new Color(200, 200, 200));  
          
      
          tableH.setForeground(new Color(0,0,205));  
JScrollPane pane = new JScrollPane(table); 

 
jb1=new JButton("查询");
jb2=new JButton("返回");
jb1.setFont(new Font("华文中宋", Font.BOLD, 18));
jb2.setFont(new Font("华文中宋", Font.BOLD, 18));
jb1.addActionListener(this);
jb2.addActionListener(this);
jb1.setBorder(null);
jb2.setBorder(null);

jtf1=new JTextField(10);

jlb1=new JLabel("按学号查询信息");
jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

jlb2=new JLabel("请输入学号：");
jlb2.setFont(new Font("华文行楷", Font.BOLD, 20));
jlb3=new JLabel("查询信息如下");
jlb2.setFont(new Font("华文行楷", Font.BOLD, 25));

jp1.add(jlb1);

jp2.add(jlb2);
jp2.add(jtf1);
jp2.add(jb1);

jp3.add(jlb3);
jp4.add(jb2);

this.add(jp1);
this.add(jp2);
this.add(jp3);
this.add(pane);
this.add(jp4);




this.setLayout(new GridLayout(5,1));  
       //给窗口设置标题
     this.setTitle("查询结果"); 
     //设置窗体大小  
       this.setSize(500,400);  
       //设置窗体初始位置  
       this.setLocation(200, 150);           
       //显示窗体  
       this.setVisible(true);  
       this.setResizable(false);  
       
       try {
File csv = new File("E://stu.txt"); // CSV文件  
BufferedReader br = new BufferedReader(new FileReader(csv)); 
// 读取直到最后一行   
String line = "";
while ((line = br.readLine()) != null) {   
    // 把一行数据分割成多个字段   
    StringTokenizer st = new StringTokenizer(line, ",");  
    Student2 st1= new Student2(st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken());  
    as2.add(st1);  
   
}   
br.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
       

}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand()=="查询"){
boolean flag=true;
tableModel.setRowCount(0); // 之前的table一定要清零！  
    
             for (Student2 student : as2) {  
               
                 System.out.println(student.name+student.gendar+student.age+student.number+student.score);  
                 if(student.number.equals(jtf1.getText())){
                 Object [] data1 ={student.name,student.gendar,student.age,student.number,student.score};  
                 tableModel.addRow(data1);  
                 flag=false;
                 JOptionPane.showMessageDialog(null,"已查询到学号为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);
                 }
                 
             }  
             if(flag){
            JOptionPane.showMessageDialog(null,"无学号为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);
             }
}else if(e.getActionCommand()=="返回"){
dispose();

}
}


}




//------------------按姓名查找界面------------------------


class Lookup_name extends JFrame implements ActionListener{
JButton jb1,jb2;
JPanel jp1,jp2,jp3,jp4,jp5;
JTextField jtf1;
JLabel jlb1,jlb2,jlb3;
JTable jtb;
ArrayList<Student2> as2 = new ArrayList<Student2>();


String col[]={"姓名","性别","年龄","学号","成绩"}; 
final DefaultTableModel tableModel = new DefaultTableModel(col, 0);
public void lookup_name(){

jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp4=new JPanel();
jp1.setBackground(Color.cyan);
jp2.setBackground(Color.cyan);
jp3.setBackground(Color.cyan);
jp4.setBackground(Color.cyan);
JTableHeader tableH; 
JTable table = new JTable(tableModel);  
 table.setEnabled(false);  

 
 table.setEnabled(false);  
 table.setBackground(new Color(144,238,144));  
          table.setForeground(new Color(100,100,100)) ;  
          table.setGridColor(new Color(105 ,105, 105));  
          tableH = table.getTableHeader();  
          //设置表头的背景色  
          tableH.setBackground(new Color(200, 200, 200));  
          //设置表头的文字颜色  
          
          tableH.setForeground(new Color(0,0,205));  
JScrollPane pane = new JScrollPane(table); 
 
jb1=new JButton("查询");
jb2=new JButton("返回");
jb1.addActionListener(this);
jb2.addActionListener(this);
jb1.setBorder(null);
jb2.setBorder(null);

jtf1=new JTextField(10);

jlb1=new JLabel("按姓名查询信息");
jlb1.setFont(new Font("华文行楷", Font.BOLD, 30));

jlb2=new JLabel("请输入姓名：");
jlb2.setFont(new Font("华文行楷", Font.BOLD, 20));
jlb3=new JLabel("查询信息如下");
jlb3.setFont(new Font("华文行楷", Font.BOLD, 25));
jp1.add(jlb1);

jp2.add(jlb2);
jp2.add(jtf1);
jp2.add(jb1);

jp3.add(jlb3);
jp4.add(jb2);

this.add(jp1);
this.add(jp2);
this.add(jp3);
this.add(pane);
this.add(jp4);




this.setLayout(new GridLayout(5,1));  
        
     this.setTitle("查询结果"); 
    
       this.setSize(500,400);  
       
       this.setLocation(200, 150);           
     
       this.setVisible(true);  
       this.setResizable(false);  
       
       try {
File txt = new File("E://stu.txt");   
BufferedReader br = new BufferedReader(new FileReader(txt)); 
  
String line = "";
while ((line = br.readLine()) != null) {   
  
    StringTokenizer st = new StringTokenizer(line, ",");  
    Student2 st1= new Student2(st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken(),st.nextToken());  
    as2.add(st1);  
   
}   
br.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
       

}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand()=="查询"){

tableModel.setRowCount(0);   
    boolean flag=true;
             for (Student2 student : as2) {  
               
                 System.out.println(student.name+student.gendar+student.age+student.number+student.score);  
                 if(student.name.equals(jtf1.getText())){
                 Object [] data1 ={student.name,student.gendar,student.age,student.number,student.score};  
                 tableModel.addRow(data1);  
                 JOptionPane.showMessageDialog(null,"已查询到姓名为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);
                 flag=false;
                 }
                
             }  
             if(flag){
            JOptionPane.showMessageDialog(null,"无姓名为："+jtf1.getText()+"的学生信息","系统提示",JOptionPane.INFORMATION_MESSAGE);
             }
            
}else if(e.getActionCommand()=="返回"){
dispose();

}
}


}








class Student2{
String  name;
String gendar;
String number;
String age;
String score;
public Student2(String name,String gendar,String age,String number,String score){
this.name=name;
this.gendar=gendar;
this.age=age;
this.number=number;                      
this.score=score;
}
}