学生管理系统/班级管理系统

package classManager; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.io.*; import java.util.*; import javax.swing.filechooser.*; @SuppressWarnings("serial") public class ModifySituation extends JFrame implements ActionListener{ TeacherPicture pic; HashMap<String,Class> BaseInformation=new HashMap<String,Class>(); JTextField classnumber,headteacher,population; JComboBox discipling,college; JButton selectpic; ButtonGroup group=null; JButton beginmodify,inputmodify,reset; RandomAccessFile in=null; RandomAccessFile out=null; File systemFile,imagePic; JComboBox oldMess; Class tec=null; String path; String college1[]={"信工学院","人文学院","建筑学院"}; @SuppressWarnings("unused") public ModifySituation(File file){ super("修改班级基本信息对话框"); Container c=getContentPane(); tec=new Class(); systemFile=file; pic=new TeacherPicture(); classnumber=new JTextField(6); headteacher=new JTextField(6); discipling=new JComboBox(); try{ FileReader inOne=new FileReader("专业.txt"); BufferedReader inTwo=new BufferedReader(inOne); String s=null; int i=0; while((s=inTwo.readLine())!=null) discipling.addItem(s); inOne.close(); inTwo.close(); } catch(IOException exp){ discipling.addItem("网络工程"); discipling.addItem("计算机科学与技术"); discipling.addItem("数字媒体技术"); discipling.addItem("卓越工程师"); } college=new JComboBox(college1); population=new JTextField(6); selectpic=new JButton("选择"); oldMess=new JComboBox(); beginmodify=new JButton("开始修改"); inputmodify=new JButton("录入修改"); inputmodify.setEnabled(false); selectpic.setEnabled(false); reset=new JButton("重置"); classnumber.addActionListener(this); beginmodify.addActionListener(this); inputmodify.addActionListener(this); reset.addActionListener(this); selectpic.addActionListener(this); Box box1=Box.createHorizontalBox(); box1.add(new JLabel("输入要修改信息的班号:",JLabel.CENTER)); box1.add(classnumber); box1.add(beginmodify); Box box2=Box.createHorizontalBox(); box2.add(new JLabel("(新)班主任:",JLabel.CENTER)); box2.add(headteacher); Box box3=Box.createHorizontalBox(); box3.add(new JLabel("(新)学院:",JLabel.CENTER)); box3.add(college); Box box4=Box.createHorizontalBox(); box4.add(new JLabel("(新)专业:",JLabel.CENTER)); box4.add(discipling); Box box5=Box.createHorizontalBox(); box5.add(new JLabel("(新)人数:",JLabel.CENTER)); box5.add(population); Box box6=Box.createHorizontalBox(); box6.add(new JLabel("已有的班级数据:",JLabel.CENTER)); box6.add(oldMess); Box boxH=Box.createVerticalBox(); boxH.add(box1); boxH.add(box2); boxH.add(box3); boxH.add(box4); boxH.add(box5); boxH.add(box6); boxH.add(Box.createVerticalGlue()); JPanel picPanel=new JPanel(); picPanel.setBackground(null); picPanel.add(new JLabel("选择照片:",JLabel.CENTER)); picPanel.add(selectpic); JPanel putButton=new JPanel(); putButton.setBackground(null); putButton.add(inputmodify); putButton.add(reset); JPanel messPanel=new JPanel(); messPanel.setBackground(null); messPanel.add(boxH); setLayout(new BorderLayout()); JSplitPane splitV=new JSplitPane(JSplitPane.VERTICAL_SPLIT,picPanel,pic); JSplitPane splitH=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,messPanel,splitV); c.add(splitH,BorderLayout.CENTER); c.add(putButton,BorderLayout.SOUTH); setSize(480,270); setVisible(true); validate(); } @SuppressWarnings({ "unchecked", "rawtypes" }) public void actionPerformed(ActionEvent e){ if(e.getSource()==beginmodify||e.getSource()==classnumber){ oldMess.removeAllItems(); String number=""; imagePic=null; tec=null; Class temp; String inf=new String(); String[] s2=new String[6]; number=classnumber.getText(); if(number.length()>0){ try{ RandomAccessFile in=new RandomAccessFile(systemFile,"r"); while((inf=in.readUTF())!=null){//注意：文本文件中一定要按照Class中定义的数据成员的顺序写入，否则此方法无效 s2[0]=inf; for(int i=1;i<6;i++){ s2[i]=in.readUTF(); temp=new Class(s2[0],s2[1],s2[2],s2[3],s2[4],s2[5]); BaseInformation.put(s2[0], temp); } } in.close(); } catch(Exception ee){} if(BaseInformation.containsKey(number)){ inputmodify.setEnabled(true); selectpic.setEnabled(true); tec=BaseInformation.get(number); oldMess.addItem("班主任:"+tec.getName()); oldMess.addItem("学院:"+tec.getCollege()); oldMess.addItem("专业:"+tec.getDiscipling()); oldMess.addItem("人数:"+tec.getPopulation()); path=tec.getImagePic(); pic.setImage(new File(path)); pic.repaint(); headteacher.setText(tec.getName()); college.setSelectedItem(tec.getCollege()); population.setText(tec.getPopulation()); discipling.setSelectedItem(tec.getDiscipling()); } else{ inputmodify.setEnabled(false); selectpic.setEnabled(false); String warning="该班级不存在！"; JOptionPane.showMessageDialog(this, warning,"警告",JOptionPane.WARNING_MESSAGE); clearMess(); } } else{ inputmodify.setEnabled(false); selectpic.setEnabled(false); String warning="必须要输入班号！"; JOptionPane.showMessageDialog(this, warning,"警告",JOptionPane.WARNING_MESSAGE); clearMess(); } } else if(e.getSource()==inputmodify){ String number=""; Class temp; String inf=new String(); String[] s2=new String[6]; number=classnumber.getText(); if(number.length()>0){ try{ RandomAccessFile in=new RandomAccessFile(systemFile,"r"); while((inf=in.readUTF())!=null){//注意：文本文件中一定要按照Class中定义的数据成员的顺序写入，否则此方法无效 s2[0]=inf; for(int i=1;i<6;i++){ s2[i]=in.readUTF(); temp=new Class(s2[0],s2[1],s2[2],s2[3],s2[4],s2[5]); BaseInformation.put(s2[0], temp); } } in.close(); } catch(Exception ee){} if(BaseInformation.containsKey(number)){ String question="该班主任基本信息已存在，您想修改他（她）的信息么？"; JOptionPane.showMessageDialog(this, question,"警告",JOptionPane.QUESTION_MESSAGE); String m="基本信息将被修改！"; int ok=JOptionPane.showConfirmDialog(this, m,"确认",JOptionPane.INFORMATION_MESSAGE); if(ok==JOptionPane.YES_OPTION){ String name=headteacher.getText(); if(name.length()==0) name=tec.getName(); String disci=(String)discipling.getSelectedItem(); if(discipling==null) disci=tec.getDiscipling(); String col=(String)college.getSelectedItem(); if(col.length()==0) col=tec.getCollege(); String popu=population.getText(); if(popu.length()==0) popu=tec.getPopulation(); if(imagePic==null) path=tec.getImagePic(); tec=new Class(); tec.setNumber(number); tec.setName(name); tec.setCollege(col); tec.setDiscipling(disci); tec.setPopulation(popu); tec.setImagePic(path); BaseInformation.put(number, tec); try{ RandomAccessFile out=new RandomAccessFile(systemFile,"rw"); out.setLength(0); Set set=BaseInformation.entrySet(); Iterator i=set.iterator(); while(i.hasNext()){ Map.Entry<String, Class> map=(Map.Entry<String, Class>)i.next(); Class temp1=new Class(); temp1=map.getValue(); out.writeUTF(temp1.getNumber()); out.writeUTF(temp1.getHeadteacher()); out.writeUTF(temp1.getCollege()); out.writeUTF(temp1.getDiscipling()); out.writeUTF(temp1.getPopulation()); out.w