record.java

来自「《Java课程设计》第二版」· Java 代码 · 共 59 行

import java.io.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Record extends JDialog implements ActionListener{
   int time=0;
   JTextField yourName;
   JLabel label; 
   JButton enter,cancel;
   File gradeFile=null;
   public Record(){
      setBounds(100,100,330,160);
      setResizable(false);
      setModal(true);
      setVisible(false);
      enter=new JButton("确定");
      cancel=new JButton("取消");
      yourName=new JTextField(8);
      yourName.setText("匿名");
      enter.addActionListener(this);
      cancel.addActionListener(this);
      setLayout(new GridLayout(2,1));
      label=new JLabel();
      add(label);
      JPanel p=new JPanel();
      p.add(yourName);
      p.add(enter);
      p.add(cancel);
      add(p);
  }
  public void setGradeFile(File f){
     gradeFile=f;
     setTitle("保存成绩到"+gradeFile.getName());
     label.setText("保存成绩到"+gradeFile.getName());
     validate();
  }
  public void setTime(int time){
     this.time=time;
  }
  public void actionPerformed(ActionEvent e){
     if(e.getSource()==enter){
       LinkedList<People> list=new LinkedList<People>();
       try{
            RandomAccessFile out=new RandomAccessFile(gradeFile,"rw");
            out.seek(out.length());
            out.writeUTF(yourName.getText()); 
            out.writeInt(time);
            out.close();
       }
       catch(Exception event) {}
       setVisible(false);
     }
     if(e.getSource()==cancel){
       setVisible(false);
     }  
  }
}