【JAVA】簡陋的學生信息管理系統

因為之前寫了一個學生信息管理系統，但還是處於命令行界面，不美觀，於是打算做一個完整的界面出來。

在網上查閱資料后發現C++本身是不支持圖形化界面的(可以使用第三方的Qt來做)

權衡之下還是選擇了JAVA，自學之路開始！！！

目前只做了登陸界面和學生成績錄入功能（其實主要還是訓練自己的界面設計能力，雖然都是一個樣子···）

 用戶名 Paul 　　　　密碼 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;    //用戶名
    private String user_password;//密碼

    JTextField jTextField;//用戶名文本框
    JPasswordField jPasswordField;//密碼文本框

    JPanel namePanel;//用戶名容器
    JPanel passwordPanel;//密碼容器
    JPanel buttonPanel;//按鈕容器
    JPanel toastPanel;//消息提示容器
    JPanel windowPanel;//總容器

    JLabel Jname;//用戶名提示
    JLabel Jpassword;//密碼提示
    JLabel Jtoast;//判斷信息

    JButton loginButton;//登陸按鈕
    JButton cancelButton;//取消按鈕

    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("用戶名");
        Jpassword=new JLabel("密    碼");
        Jtoast=new JLabel("");

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


        frame =new JFrame("登陸窗口");

        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("登陸"))
        {
            if(jTextField.getText().equals(user_name)&&jPasswordField.getText().equals(user_password))
            {
                //Jtoast.setText(jTextField.getText()+"  用戶歡迎使用！");
                JOptionPane.showMessageDialog(null, "登陸成功");
                frame.dispose();//關閉當前窗口
                new StuData();
            }
            else
            {
                Jtoast.setText("用戶名或密碼錯誤！");
            }
        }
        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;//課程文本框
    JTextField Tgrades;//成績文本框
    JButton addButton;//添加按鈕
    JButton cancelButton;//取消按鈕
    JPanel coursePanel;//課程容器
    JPanel gradePanel;//成績容器
    JPanel buttonPanel;//按鈕容器
    JPanel windowPanel;//總容器
    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);//課程文本框
        Tgrades = new JTextField(13);//成績文本框
        addButton = new JButton("添加");//添加按鈕
        addButton.addActionListener(addListener);
        cancelButton = new JButton("取消");//取消按鈕
        cancelButton.addActionListener(addListener);
        coursePanel = new JPanel();//課程容器
        gradePanel = new JPanel();//成績容器
        buttonPanel = new JPanel();//按鈕容器
        windowPanel = new JPanel();//總容器
        Jcourse = new JLabel("課程");
        Jgrades = new JLabel("成績");
        frame = new JFrame("成績錄入界面");
        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, "學生成績錄入成功");
                    frame.dispose();
                } catch (NumberFormatException error) {
                    JOptionPane.showMessageDialog(null, "你個大壞蛋，輸錯了啦");
                    TcourseName.setText("");
                    Tgrades.setText("");
                }
            }
            else
            {
            TcourseName.setText("");
            Tgrades.setText("");
            }
         }
    }
}




public class StuData {
    public String name;//學生姓名
    public String number;//學生學號
    public String sex;//學生
    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("成績信息添加成功！");
    }

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

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

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

    public void setGrades(){//公有函數，彈出成績錄入窗口並采集信息

        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，這個界面就是登陸成功后的界面，對學生信息進行查詢打印修改等操作

}