n002sale.java

我的JAVA, 不知道好不好,希望你可以改

import java.awt.*;
import javax.swing.*;
import java.io.*;
class N002Sale extends JFrame
{
  N002Sale(String s)
  {
    super(s);
    setBounds(100,100,300,300);
    setVisible(true);
    JTextArea bCenter=new JTextArea();
    bCenter.append("002"+"  "+Number002.thisorder()+"   "+Number002.thisPrice()+"\n");
    Container con=getContentPane();
    con.add(bCenter,BorderLayout.CENTER);
    con.validate();
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    try{
        FileReader readFile=new FileReader("Sales002.txt");
    
        
        try{
            FileReader inOne=new FileReader("Sales002.txt");
            BufferedReader inTwo=new BufferedReader(inOne);
            String a=null;
            while((a=inTwo.readLine())!=null)
            {
             bCenter.append(a+"\n");
            }
            inOne.close();
            inTwo.close();
           }
        catch(IOException e)
           {
           }
       }
    catch(java.io.FileNotFoundException e)
       {
       }
   }
}