mainframe.java~9~

Tt s a good book ,if you want to learn java good

package sos;

//系统的主类，功能实现的基础
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class MainFrame extends JFrame implements ActionListener, Runnable {
    static MainFrame aCheck;
    static boolean hasLogIn = false, moveForward = true; //分别标记是否登陆和时间标签是否前移
    static String wel = "欢迎使用！请先登录系统！", time = ""; //欢迎String和时间标签
    char[] char_Wel = {'欢', '迎', '使', '用', '学', '生', '信', '息', '综', '合',
                      '查', '询', '管', '理', '系', '统', '！'};
    static JLabel jLabel_Wel; //欢迎标签
    static long systemTime;
    Date date;
    static int id = 0, time_x = 0, time_y = 320; //0 for students and 1 for teachers以及时间坐标
    static LogIn log; //登陆系统
    static ChangePassword changepassword; //更改密码
    static InputBasicInfo inputbasicinfo; //基本信息录入
    static InputSelectedLessonInfo inputselectedlessoninfo; //选课信息录入
    static InputScore inputscore; //成绩信息录入
    static BasicInfoCheck basicinfocheck; //基本信息查询
    static SelectedLessonInfoCheck selectedlessoninfocheck; //选课信息查询
    static LessonInfoCheck lessoninfocheck; //课程信息查询
    static ScoreCheck scorecheck; //成绩总查询
    static JMenu choice0, choice1, choice2, choice3, choice4;
    static JMenuItem m00, m01;
    Thread titleThread, timeThread;
    public MainFrame() {
        super("学生信息综合查询管理系统");
        setSize(400, 400);
        setResizable(false);
        Container content = getContentPane();
        content.setBackground(Color.white);
        content.setLayout(new BorderLayout());
        jLabel_Wel = new JLabel(wel);
        jLabel_Wel.setHorizontalAlignment(SwingConstants.
                                          CENTER);
        jLabel_Wel.setFont(new Font("华文行楷", Font.BOLD, 30));
        content.add(jLabel_Wel);
        addWindowListener(new InnerDestroyer());
        choice0 = new JMenu("文件");
        choice0.setEnabled(true);
        JMenuItem m0;
        m0 = new JMenuItem("用户登录");
        m0.addActionListener(this);
        choice0.add(m0);
        m0 = new JMenuItem("关于系统");
        m0.addActionListener(this);
        choice0.add(m0);
        m0 = new JMenuItem("系统帮助");
        m0.addActionListener(this);
        choice0.add(m0);
        m01 = new JMenuItem("修改密码");
        m01.setEnabled(false);
        m01.addActionListener(this);
        choice0.add(m01);
        m00 = new JMenuItem("注销登录");
        m00.setEnabled(hasLogIn);
        m00.addActionListener(this);
        choice0.add(m00);
        m0 = new JMenuItem("退出系统");
        m0.addActionListener(this);
        choice0.add(m0);
        choice1 = new JMenu("信息录入"); //only for teacher
        JMenuItem m1;
        m1 = new JMenuItem("基本信息录入"); //only for teacher
        m1.addActionListener(this);
        choice1.add(m1);
        m1 = new JMenuItem("选课信息录入"); //only for teacher
        m1.addActionListener(this);
        choice1.add(m1);
        m1 = new JMenuItem("成绩信息录入"); //only for teacher
        m1.addActionListener(this);
        choice1.add(m1);
        m1 = new JMenuItem("信息录入说明"); //only for teacher
        m1.addActionListener(this);
        choice1.add(m1);
        choice2 = new JMenu("统计查询");
        JMenuItem m2;
        m2 = new JMenuItem("基本信息查询");
        m2.addActionListener(this);
        choice2.add(m2);
        m2 = new JMenuItem("课程信息查询");
        m2.addActionListener(this);
        choice2.add(m2);
        m2 = new JMenuItem("选课信息查询");
        m2.addActionListener(this);
        choice2.add(m2);
        m2 = new JMenuItem("统计查询说明");
        m2.addActionListener(this);
        choice2.add(m2);
        choice3 = new JMenu("成绩查询");
        JMenuItem m3;
        m3 = new JMenuItem("开始成绩查询");
        m3.addActionListener(this);
        choice3.add(m3);
        m3 = new JMenuItem("成绩查询说明");
        m3.addActionListener(this);
        choice3.add(m3);
        choice4 = new JMenu("系统管理"); //only for the administrator
        JMenuItem m4;
        m4 = new JMenuItem("管理员登录"); //only for the administrator
        m4.addActionListener(this);
        choice4.add(m4);
        JMenuBar mBar = new JMenuBar();
        mBar.setBackground(Color.white);
        mBar.add(choice0);
        choice1.setEnabled(hasLogIn);
        mBar.add(choice1);
        choice2.setEnabled(hasLogIn);
        mBar.add(choice2);
        choice3.setEnabled(hasLogIn);
        mBar.add(choice3);
        mBar.add(choice4);
        setJMenuBar(mBar);
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = getSize();
        if (frameSize.height > screenSize.height) {
            frameSize.height = screenSize.height;
        }
        if (frameSize.width > screenSize.width) {
            frameSize.width = screenSize.width;
        }
        setLocation((screenSize.width - frameSize.width) / 2,
                    (screenSize.height - frameSize.height) / 2);
        setVisible(true);
        systemTime = System.currentTimeMillis();
        date = new Date(systemTime);
        time = date.toString();
        timeThread = new Thread();
        timeThread.start();
        titleThread = new Thread(this);
        titleThread.start();
    }

    public void moveTime() {
        systemTime = System.currentTimeMillis();
        date = new Date(systemTime);
        time = date.toString();
        if (moveForward) {
            if (time_x >= 130) {
                moveForward = false;
            } else {
                time_x += 5;
            }
        }
        if ((!moveForward)) {
            if (time_x >= 5) {
                time_x -= 5;
            } else {
                moveForward = true;
            }
        }
    }

    public void run() {
        while (true) {
            try {
                Thread.sleep(500);
                repaint();
            } catch (Exception e) {
            }
            moveTime();
            repaint();
        }
    }

    public void paint(Graphics g) {
        this.paintComponents(g);
        for (int i = 0; i < char_Wel.length; i++) {
            int red = (int) (Math.random() * 255),
                      blue = (int) (Math.random() * 255),
                             green = (int) (Math.random() * 255);
            g.setFont(new Font("Serif", Font.BOLD, 25));
            g.setColor(new Color(red, blue, green));
            g.drawChars(char_Wel, i, 1, 5 + 23 * i,
                        100 + (int) (25 * Math.cos(Math.PI / 4.8 * (i - 1))));
            g.setColor(Color.red);
            g.setFont(new Font("Serif", Font.BOLD, 20));
            g.drawString(time, time_x, time_y + 10);
        }
    }

    public static void logOut() {
        hasLogIn = false;
        id = 0;
        jLabel_Wel.setText(wel);
        reset();
    }

    public static void reset() {
        m00.setEnabled(hasLogIn);
        m01.setEnabled(hasLogIn);
        choice1.setEnabled(id == 1);
        choice2.setEnabled(hasLogIn);
        choice3.setEnabled(hasLogIn);
    }

    public static void main(String[] args) {
        aCheck = new MainFrame();
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("用户登录")) {
            if (hasLogIn == false) {
                log = new LogIn(this, true);
            } else {
                if (JOptionPane.showConfirmDialog(this,
                                                  "你已经登录系统！是否重新登陆？单击\"确定\"注销并重新登陆，否则单击\"撤销\"。",
                                                  "重新登陆？", 2) ==
                    0) {
                    id = 0;
                    logOut();
                    log = new LogIn(this, true);
                } else {
                }
            }
        }
        if (e.getActionCommand().equals("关于系统")) {
            JOptionPane.showMessageDialog(this,
                                          "本系统由yanke制作。QQ：251200877，Email：[e-mail]。\n谢谢使用，欢迎交流沟通！",
                                          "关于系统", 1);
        }
        if (e.getActionCommand().equals("系统帮助")) {
            JOptionPane.showMessageDialog(this,
                                          "本系统主要实现信息录入（仅供教师使用），统计查询，成绩查询及排序等几个功能。\n在每个功能模块内附有相应的使用说明。谢谢使用系统！",
                                          "系统帮助", 1);

        }
        if (e.getActionCommand().equals("修改密码")) {
            changepassword = new ChangePassword(this, true);
        }
        if (e.getActionCommand().equals("注销登录")) {
            int logout = JOptionPane.showConfirmDialog(this,
                    "确定注销登陆？\n是请单击“确定”，取消请单击“撤销”。",
                    "退出系统？", 2);
            if (logout == 0) {
                logOut();
            }
        }
        if (e.getActionCommand().equals("退出系统")) {
            int exit = JOptionPane.showConfirmDialog(this,
                    "确定退出系统？\n是请单击“确定”，取消退出请单击“撤销”。",
                    "退出系统？", 2);
            if (exit == 0) {
                System.exit(0);
            }
        }
        if (e.getActionCommand().equals("基本信息录入")) {
            inputbasicinfo = new InputBasicInfo(this, true);
        }
        if (e.getActionCommand().equals("选课信息录入")) {
            inputselectedlessoninfo = new InputSelectedLessonInfo(this, true);
        }
        if (e.getActionCommand().equals("成绩信息录入")) {
            inputscore = new InputScore(this, true);
        }
        if (e.getActionCommand().equals("信息录入说明")) {
            JOptionPane.showMessageDialog(this,
                                          "信息录入（教师使用）功能主要实现学生的基本信息,选课信息以及成绩信息的录入。支持每名学生最多选择15门课程。\n谢谢使用！",
                                          "信息录入说明", 1);

        }
        if (e.getActionCommand().equals("基本信息查询")) {
            basicinfocheck = new BasicInfoCheck(this, true);
        }
        if (e.getActionCommand().equals("课程信息查询")) {
            lessoninfocheck = new LessonInfoCheck(this, true);
        }
        if (e.getActionCommand().equals("选课信息查询")) {
            selectedlessoninfocheck = new SelectedLessonInfoCheck(this, true);
        }
        if (e.getActionCommand().equals("统计查询说明")) {
            JOptionPane.showMessageDialog(this,
                                          "统计查询功能主要实现学生的基本信息，选课信息和选课信息的查询。\n谢谢使用！",
                                          "信息录入说明", 1);

        }
        if (e.getActionCommand().equals("开始成绩查询")) {
            if (id == 1) {
                scorecheck = new ScoreCheck(this, true);
            }
        }
        if (e.getActionCommand().equals("成绩查询说明")) {
            JOptionPane.showMessageDialog(this,
                                          "成绩查询功能主要实现学生的各已选课程的成绩查询。\n谢谢使用！",
                                          "成绩查询说明", 1);

        }
        if (e.getActionCommand().equals("开始排序查询")) {}
        if (e.getActionCommand().equals("成绩排序说明")) {
            JOptionPane.showMessageDialog(this,
                                          "排序查询功能主要实现学生的成绩查询，并支持多种排序。\n谢谢使用！",
                                          "排序查询说明", 1);
        }
        if (e.getActionCommand().equals("管理员登陆")) {
            JOptionPane.showMessageDialog(this,
                                          "抱歉，该功能现无法使用。\n谢谢使用！",
                                          "管理员登陆", 1);
        }
    }

    private class InnerDestroyer extends WindowAdapter {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    }
}