【JAVA】简陋的学生信息管理系统

因为之前写了一个学生信息管理系统，但还是处于命令行界面，不美观，于是打算做一个完整的界面出来。

在网上查阅资料后发现C++本身是不支持图形化界面的(可以使用第三方的Qt来做)

权衡之下还是选择了JAVA，自学之路开始！！！

目前只做了登陆界面和学生成绩录入功能（其实主要还是训练自己的界面设计能力，虽然都是一个样子···）

用户名 Paul 　　　　密码 123456

Login.java

 package Menu_UI;

 import Data.StuData;

 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;

 public class Login implements  ActionListener
 {

     private String user_name;    //用户名
     private String user_password;//密码

     JTextField jTextField;//用户名文本框
     JPasswordField jPasswordField;//密码文本框

     JPanel namePanel;//用户名容器
     JPanel passwordPanel;//密码容器
     JPanel buttonPanel;//按钮容器
     JPanel toastPanel;//消息提示容器
     JPanel windowPanel;//总容器

     JLabel Jname;//用户名提示
     JLabel Jpassword;//密码提示
     JLabel Jtoast;//判断信息

     JButton loginButton;//登陆按钮
     JButton cancelButton;//取消按钮

     JFrame frame;//窗口

     public  Login()
     {
         user_name="Paul";
         user_password="123456";

         jTextField=new JTextField(20);
         jPasswordField=new JPasswordField(20);

         namePanel=new JPanel();
         passwordPanel=new JPanel();
         buttonPanel=new JPanel();
         toastPanel=new JPanel();
         windowPanel=new JPanel(new GridLayout(4,1));

         Jname=new JLabel("用户名");
         Jpassword=new JLabel("密    码");
         Jtoast=new JLabel("");

         loginButton=new JButton("登陆");
         loginButton.addActionListener(this);
         cancelButton=new JButton("重置");
         cancelButton.addActionListener(this);

         frame =new JFrame("登陆窗口");

         frame.setSize(500,300);

         frame.setVisible(true);

         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

         namePanel.add(Jname);
         namePanel.add(jTextField);

         passwordPanel.add(Jpassword);
         passwordPanel.add(jPasswordField);

         toastPanel.add(Jtoast);

         buttonPanel.add(loginButton);
         buttonPanel.add(cancelButton);

         windowPanel.add(namePanel);
         windowPanel.add(passwordPanel);
         windowPanel.add(toastPanel);
         windowPanel.add(buttonPanel);
         frame.setContentPane(windowPanel);

     }
     public static void main(String args[])
     {
         new Login();
     }

     public void actionPerformed(ActionEvent e) {
         String cmd=e.getActionCommand();
         if(cmd.equals("登陆"))
         {
             if(jTextField.getText().equals(user_name)&&jPasswordField.getText().equals(user_password))
             {
                 //Jtoast.setText(jTextField.getText()+"  用户欢迎使用！");
                 JOptionPane.showMessageDialog(null, "登陆成功");
                 frame.dispose();//关闭当前窗口
                 new StuData();
             }
             else
             {
                 Jtoast.setText("用户名或密码错误！");
             }
         }
         else
         {
             jTextField.setText("");
             jPasswordField.setText("");
         }

     }

 }

StuData.java

 package Data;

 import javax.swing.*;
 import javax.swing.event.AncestorEvent;
 import javax.swing.event.AncestorListener;
 import java.awt.event.ActionListener;
 import java.util.HashMap;
 import java.util.Map;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 class addView {
     JTextField TcourseName;//课程文本框
     JTextField Tgrades;//成绩文本框
     JButton addButton;//添加按钮
     JButton cancelButton;//取消按钮
     JPanel coursePanel;//课程容器
     JPanel gradePanel;//成绩容器
     JPanel buttonPanel;//按钮容器
     JPanel windowPanel;//总容器
     JLabel Jcourse;
     JLabel Jgrades;
     JFrame frame;
     String course_name;
     Double course_grades;
     SimpleListener addListener;

     public addView(){
         addListener=new SimpleListener();
         course_grades=0.0;
         course_name="";
         TcourseName = new JTextField(13);//课程文本框
         Tgrades = new JTextField(13);//成绩文本框
         addButton = new JButton("添加");//添加按钮
         addButton.addActionListener(addListener);
         cancelButton = new JButton("取消");//取消按钮
         cancelButton.addActionListener(addListener);
         coursePanel = new JPanel();//课程容器
         gradePanel = new JPanel();//成绩容器
         buttonPanel = new JPanel();//按钮容器
         windowPanel = new JPanel();//总容器
         Jcourse = new JLabel("课程");
         Jgrades = new JLabel("成绩");
         frame = new JFrame("成绩录入界面");
         frame.setSize(800, 100);
         frame.setVisible(true);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

         coursePanel.add(Jcourse);
         coursePanel.add(TcourseName);

         gradePanel.add(Jgrades);
         gradePanel.add(Tgrades);

         buttonPanel.add(addButton);
         buttonPanel.add(cancelButton);

         windowPanel.add(coursePanel);
         windowPanel.add(gradePanel);
         windowPanel.add(buttonPanel);
         frame.setContentPane(windowPanel);

     }

     class  SimpleListener implements ActionListener {
         public void actionPerformed(ActionEvent e) {
             String cmd = e.getActionCommand();
             if(cmd.equals("添加")) {
                 try {
                     //set_grades(TcourseName.getText().toString(), Double.parseDouble(Tgrades.getText().toString()));
                     course_name = TcourseName.getText().toString();
                     course_grades = Double.parseDouble(Tgrades.getText().toString());
                     JOptionPane.showMessageDialog(null, "学生成绩录入成功");
                     frame.dispose();
                 } catch (NumberFormatException error) {
                     JOptionPane.showMessageDialog(null, "你个大坏蛋，输错了啦");
                     TcourseName.setText("");
                     Tgrades.setText("");
                 }
             }
             else
             {
             TcourseName.setText("");
             Tgrades.setText("");
             }
          }
     }
 }

 public class StuData {
     public String name;//学生姓名
     public String number;//学生学号
     public String sex;//学生
     public Map<String, Double> grades_map;
     public double average;
     public int total_lesson;

     private void set_grades(String course_name, Double grades) {
         grades_map.put(course_name, grades);
         System.out.println("成绩信息添加成功！");
     }

     private void print_grades(){
         for (Map.Entry<String, Double> entry : grades_map.entrySet()) {//遍历map
             System.out.println("key= " + entry.getKey() + " and value= " + entry.getValue());
         }
     }

     public StuData(){//构造函数
         name = "";
         number = "";
         sex = "";
         average = 0.0;
         total_lesson = 0;
         grades_map = new HashMap<String, Double>();
     }

     public void init(String _name, String _number, String _sex){//初始化学生信息
         name = _name;
         number = _number;
         sex = _sex;
     }

     public void setGrades(){//公有函数，弹出成绩录入窗口并采集信息

         new addView();
     }

     public static void main(String args[]){
         StuData test=new StuData();
         test.setGrades();
     }
 }

Welcome.java

 package Menu_UI;

 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 public class Welcome {

 //待完善，这个界面就是登陆成功后的界面，对学生信息进行查询打印修改等操作

 }