关于成绩分析问题的源代码

import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Windo extends JFrame implements ActionListener{ private static final long serialVersionUID = 2034652375246145970L; private Control control; private Display display; private Storage storage; private boolean flag; public Windo() { this.setTitle("成绩分析系统"); Toolkit tk =Toolkit.getDefaultToolkit(); Dimension d= tk.getScreenSize(); int screenHeight=d.height; int screenWidth=d.width; setSize(screenWidth/2,screenHeight/2); setLocation(screenWidth/4,screenHeight/4); createMenu(); control=new Control(this); String heading[]={"姓名","学号","数学","语文","计算机","平均分","及格否"}; display=new Display(this,7,heading); display.displayTable2(); storage=new Storage(this); flag=false; addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); //setVisible(true); } public void actionPerformed(ActionEvent event){ String menuName=event.getActionCommand(); if(menuName.equals("新建")){ newTable(); } else if(menuName.equals("打开")){ openTable(); } else if(menuName.equals("保存")){ saveTable(); } else if(menuName.equals("另存")){ saveAsTable(); } else if(menuName.equals("退出")){ quitProgram(); } else if(menuName.equals("添加新记录")){ addNewStudent();///////////////////////////////// } else if(menuName.equals("删除")){ deleteStudent(); } else if(menuName.equals("查询")){ showStudent(); } else if(menuName.equals("关闭")){ closeTable(); } }// 排序、成绩分析 private void addNewStudent(){ if(control.hasGradeTable()){ control.addStudent(); showAllStudents(); flag=true; } else{/////////////////////////////////////////////// JOptionPane.showMessageDialog(this, "当前没有打开的成绩薄"); } } private void createNewTable(){ control.newGradeTable(); display.displayTable2(); if(control.hasGradeTable()){ setNewTitle(); flag=true; } } private void deleteStudent(){ if(control.hasGradeTable()){ control.deleteStudent(); showAllStudents(); flag=true; } else{ JOptionPane.showMessageDialog(this, "当前没有打开成绩薄"); } } private void newTable(){ if(!control.hasGradeTable()){ createNewTable(); } else{ int an=JOptionPane.showConfirmDialog(this, "保存当前成绩薄？","提示",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.INFORMATION_MESSAGE); switch(an){ case JOptionPane.YES_OPTION: saveTable(); closeTable(); createNewTable(); break; case JOptionPane.NO_OPTION: closeTable(); createNewTable(); break; case JOptionPane.CANCEL_OPTION: break; } } } private void closeTable(){ if(control.hasGradeTable()){ if(flag){ int an=JOptionPane.showConfirmDialog(this, "保存当前成绩薄？","关闭提示",JOptionPane.YES_NO_OPTION,JOptionPane.INFORMATION_MESSAGE); switch(an){ case JOptionPane.YES_OPTION: saveTable(); break; case JOptionPane.NO_OPTION: break; } } control.closertable(); display.closeTable(); this.setTitle("成绩分析系统"); } } private void openTable(){ if(control.hasGradeTable()){ int an=JOptionPane.showConfirmDialog(this, "保存当前成绩薄？","提示",JOptionPane.YES_NO_OPTION,JOptionPane.INFORMATION_MESSAGE); switch(an){ case JOptionPane.YES_OPTION: saveTable(); control.closertable(); display.closeTable(); break; case JOptionPane.NO_OPTION: break; } } GradeTable table=storage.open(); if(table==null){ JOptionPane.showMessageDialog(this, "打开文件失败!"); } else{ control.setGradeTable(table); setNewTitle(); showAllStudents(); } } private void quitProgram(){ System.exit(0); } private void saveTable(){ if(control.hasGradeTable()){ GradeTable table=control.gettable(); boolean success=storage.save(table); if(!success){ JOptionPane.showMessageDialog(this, "保存数据失败！"); } else flag=false; } else { JOptionPane.showMessageDialog(this, "当前没有打开的成绩薄！"); } } private void saveAsTable(){ if(control.hasGradeTable()){ GradeTable table=control.gettable(); boolean success=storage.saveAs(table); if(!success){ JOptionPane.showMessageDialog(this, "另保存数据失败！"); } else flag=false; } else { JOptionPane.showMessageDialog(this, "当前没有打开的成绩薄！"); } } private void showAllStudents(){ if(control.hasGradeTable()){ GradeTable table=control.gettable(); display.displayAll(table); } else{ JOptionPane.showMessageDialog(this, "当前没有打开的成绩薄！"); } } private void showStudent(){ if(control.hasGradeTable()){ GradeTable table=control.gettable(); display.displayOne(table); } else{ JOptionPane.showMessageDialog(this, "当前没有打开的成绩薄！"); } } private void setNewTitle(){ String title=control.getclasTitle(); setTitle("当前打开的成绩薄："+title); } private void createMenu() { MenuItem item; Menu menu; MenuBar menuBar; menuBar=new MenuBar();//文件菜单 menu=new Menu("文件"); menuBar.add(menu); item=new MenuItem("新建"); item.addActionListener(this); menu.add(item); item=new MenuItem("打开"); item.addActionListener(this); menu.add(item); item=new MenuItem("保存"); item.addActionListener(this); menu.add(item); item=new MenuItem("另存"); item.addActionListener(this); menu.add(item); item=new MenuItem("关闭"); item.addActionListener(this); menu.add(item); item=new MenuItem("退出"); item.addActionListener(this); menu.add(item); menu=new Menu("编辑");//编辑菜单 menuBar.add(menu); item=new MenuItem("查询"); item.addActionListener(this); menu.add(item); item=new MenuItem("添加新记录"); item.addActionListener(this); menu.add(item); item=new MenuItem("删除"); item.addActionListener(this); menu.add(item); item=new MenuItem("修改"); item.addActionListener(this); menu.add(item); menu=new Menu("排序");//排序菜单 menuBar.add(menu); item=new MenuItem("按数学成绩排序"); item.addActionListener(this); menu.add(item); item=new MenuItem("按语文成绩排序"); item.addActionListener(this); menu.add(item); item=new MenuItem("按计算机成绩排序"); item.addActionListener(this); menu.add(item); item=new MenuItem("按个人平均成绩成绩排序"); item.addActionListener(this); menu.add(item); menu=new Menu("成绩分析");//每门课程成绩分析菜单 menuBar.add(menu); item=new MenuItem("语文成绩分析"); item.addActionListener(this); menu.add(item); item=new MenuItem("数学成绩分析"); item.addActionListener(this); menu.add(item); item=new MenuItem("计算机成绩分析"); item.addActionListener(this); menu.add(item); item=new MenuItem("平均分分析"); item.addActionListener(this); menu.add(item); menu=new Menu("帮助");//帮助菜单 menuBar.add(menu); setMenuBar(menuBar); this.setVisible(true); } }