www.pudn.com > 学籍管理系统.zip > Inquest.java

import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import java.io.*; 
import java.util.*; 
public class Inquest extends JDialog implements ActionListener 
{  
  Hashtable 基本信息表=null;                            
  JTextField 学号,姓名,专业,年级,出生;                  
  JRadioButton 男,女; 
  JButton 查询; 
  ButtonGroup group=null; 
  FileInputStream inOne=null; 
  ObjectInputStream inTwo=null; 
  File file=null;                                            
  public Inquest(JFrame f,File file) 
  { 
   super(f,"查询对话框",false);                            
   this.file=file; 
   学号=new JTextField(10); 
   查询=new JButton("查询"); 
   学号.addActionListener(this); 
   查询.addActionListener(this); 
   姓名=new JTextField(10); 
   姓名.setEditable(false); 
   专业=new JTextField(10); 
   专业.setEditable(false); 
   年级=new JTextField(10); 
   年级.setEditable(false); 
   出生=new JTextField(10); 
   出生.setEditable(false); 
   男=new JRadioButton("男",false); 
   女=new JRadioButton("女",false); 
   group=new ButtonGroup(); 
   group.add(男); 
   group.add(女); 
   Box box1=Box.createHorizontalBox();               
   box1.add(new JLabel("输入要查询的学号:",JLabel.CENTER)); 
   box1.add(学号); 
   box1.add(查询); 
   Box box2=Box.createHorizontalBox();               
   box2.add(new JLabel("姓名:",JLabel.CENTER)); 
   box2.add(姓名); 
   Box box3=Box.createHorizontalBox();               
   box3.add(new JLabel("性别:",JLabel.CENTER)); 
   box3.add(男); 
   box3.add(女); 
   Box box4=Box.createHorizontalBox();               
   box4.add(new JLabel("专业:",JLabel.CENTER)); 
   box4.add(专业); 
   Box box5=Box.createHorizontalBox();               
   box5.add(new JLabel("年级:",JLabel.CENTER)); 
   box5.add(年级); 
   Box box6=Box.createHorizontalBox();               
   box6.add(new JLabel("出生:",JLabel.CENTER)); 
   box6.add(出生); 
   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 pCenter=new JPanel(); 
   pCenter.add(boxH); 
   Container con=getContentPane(); 
   con.add(pCenter,BorderLayout.CENTER); 
   con.validate(); 
   setVisible(false); 
   setBounds(100,200,360,270); 
   addWindowListener(new WindowAdapter() 
                    { public void windowClosing(WindowEvent e) 
                       { 
                         setVisible(false); 
      	               } 
                    }); 
  } 
 public void actionPerformed(ActionEvent e) 
  {     
     姓名.setText(null); 
     专业.setText(null); 
     年级.setText(null); 
     出生.setText(null); 
      
    if(e.getSource()==查询||e.getSource()==学号) 
      { 
         String number=""; 
         number=学号.getText(); 
         
         if(number.length()>0) 
            { 
              try { 
                    inOne=new FileInputStream(file); 
                    inTwo=new ObjectInputStream(inOne); 
                    基本信息表=(Hashtable)inTwo.readObject(); 
                    inOne.close(); 
                    inTwo.close(); 
                  } 
               catch(Exception ee) 
                   { 
                   } 
              if(基本信息表.containsKey(number))           
                 { 
                   Student stu=(Student)基本信息表.get(number); 
                   姓名.setText(stu.getName()); 
                   专业.setText(stu.getDisciping()); 
                   年级.setText(stu.getGrade()); 
                   出生.setText(stu.getBorth());  
                   if(stu.getSex().equals("男")) 
                      { 
                        男.setSelected(true); 
                      } 
                    else 
                      { 
                        女.setSelected(true); 
                      } 
    
                 } 
              else 
                 {  
                  String warning="该学号不存在!"; 
                  JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE); 
                 } 
            } 
        else 
            {  
              String warning="必须要输入学号!"; 
              JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE); 
            } 
      }  
  } 
}