teacherframe.java

由java编写的学生选课管理系统

import java.sql.*; 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;;


/**
   a student frame with menus

public class TeacherFrame  
{
	public static void main(String[] args)
	{
	  TeachersFrame myFrame = new TeachersFrame();
	  myFrame.setVisible(true);
	  myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}
*/

public class TeacherFrame extends JFrame
{
	public TeacherFrame()
  {
   	
	  setTitle("学生选课管理系统（教师）");
	  setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
	  setLocation(350, 200);
	  setResizable(false);
	  
	  //创建三个菜单
	  JMenu systemMenu = new JMenu("系统维护");
	  systemMenu.add(new TeacherMenuAction("修改密码", new ImageIcon("01.gif")));
	  systemMenu.add(new 
	    AbstractAction("退出系统", new ImageIcon("02.gif"))
	    {
	    	public void actionPerformed(ActionEvent e)
	    	{
	    	  System.exit(0);
	    	}
	    });
	  
	  JMenu functionMenu = new JMenu("功能选项");
	  functionMenu.add(new TeacherMenuAction("选课名单"));
	  functionMenu.add(new TeacherMenuAction("成绩管理"));
	  functionMenu.add(new TeacherMenuAction("查询统计"));
	  functionMenu.add(new TeacherMenuAction("个人信息"));
	  
	  JMenu helpMenu = new JMenu("帮助");
	  helpMenu.add(new 
	    AbstractAction("说明")
	    {
	    	public void actionPerformed(ActionEvent e)
	    	{
	    		String s = "        本系统是用JAVA语言编写的，可以在\n"
                     +"任何安装了相应的JAVA虚拟机的系统使用。\n";
	    		JOptionPane.showMessageDialog(TeacherFrame.this, s, "使用说明", JOptionPane.INFORMATION_MESSAGE, 
	    		                              new ImageIcon("01.gif"));
	    	}
	    });
	  helpMenu.add(new
	    AbstractAction("关于")
	    {
	    	public void actionPerformed(ActionEvent e)
	    	{
	    		String s = "        作者：李常友\n指导老师：龙毅宏";
	    		JOptionPane.showMessageDialog(TeacherFrame.this, s, "作品信息", JOptionPane.INFORMATION_MESSAGE, 
	    		                              new ImageIcon("02.gif"));
		    		                    
	    	}
	    });
	  
	  
	  //创建菜单栏，并把菜单添加到菜单栏中
	  JMenuBar teacherMenuBar = new JMenuBar();
	  teacherMenuBar.add(systemMenu);
	  teacherMenuBar.add(functionMenu);
	  teacherMenuBar.add(helpMenu);
	  
	  //将菜单栏添加到框架中
	  setJMenuBar(teacherMenuBar);
	  
	  JLabel welcomeLabel = new JLabel("欢迎使用学生信息管理系统", SwingConstants.CENTER);
    welcomeLabel.setFont(new Font("TimesRoman",Font.BOLD,30));
    welcomeLabel.setForeground(Color.RED);
	    
    //创建各个菜单面板
    TeacherPanel modifyPasswordPanel = new TeacherPanel(0); 
    //TeacherPanel nameListPanel = new TeacherPanel(1);   此语句添加到监听器中了
    //TeacherPanel gradePanel = new TeacherPanel(2);         此语句添加到方法中了
   // TeacherPanel queryPanel = new TeacherPanel(3);
   // TeacherPanel selfInfoPanel = new TeacherPanel(4);
    
    
     //添加各个卡片
	  myPanel = new JPanel();           
	  card = new CardLayout();
	  myPanel.setLayout(card);
	  myPanel.add(welcomeLabel, "welcomeLabel");
	  myPanel.add(modifyPasswordPanel, "modifyPasswordPanel");
	  //myPanel.add(nameListPanel, "nameListPanel");
	 // myPanel.add(gradePanel, "gradePanel");
	 // myPanel.add(selfInfoPanel, "selfInfoPanel");
	  
	  
	  add(myPanel);
	  validate();
	    
	}
	
	

	
	//the menu action listener
	private class TeacherMenuAction extends AbstractAction
	{
		//两个构造器
		public TeacherMenuAction(String s)
		{
			super(s);
		}
		
		public TeacherMenuAction(String s, ImageIcon icon)
		{
			super(s, icon);
		}
		
		
		public void actionPerformed(ActionEvent e)
		{
			if(getValue(Action.NAME).equals("修改密码"))    //修改密码监听
	  	{
	  		card.show(myPanel, "modifyPasswordPanel");
		  }
		
	  	else if(getValue(Action.NAME).equals("选课名单"))         //哈哈 389页如何得到字符串
	  	{
	  		TeacherPanel nameListPanel = new TeacherPanel(1);
	  		myPanel.add(nameListPanel, "nameListPanel");
	  		card.show(myPanel, "nameListPanel");
		  }
		  
		  else if(getValue(Action.NAME).equals("成绩管理"))         //哈哈 389页如何得到字符串
	  	{
	  		TeacherPanel gradePanel = new TeacherPanel(2); 
	  		myPanel.add(gradePanel, "gradePanel");
	      card.show(myPanel, "gradePanel");
		  }
		  
		  else if(getValue(Action.NAME).equals("查询统计"))
		  { 
		  	TeacherPanel queryPanel = new TeacherPanel(3);
		  	myPanel.add(queryPanel, "queryPanel");
		  	card.show(myPanel, "queryPanel");
		  	
		  }

		  else if(getValue(Action.NAME).equals("个人信息"))
		  {
		  	
        TeacherPanel selfInfoPanel = new TeacherPanel(4);
		  	myPanel.add(selfInfoPanel, "selfInfoPanel");
		  	card.show(myPanel, "selfInfoPanel");
		  }
		}
	}
	
	private static final int DEFAULT_WIDTH = 450, DEFAULT_HEIGHT = 300;
	private JPanel myPanel;
	private CardLayout card = null;
	
}