File in the Uppen mode is not getting deleted !

Question

Hello All,
I am creating a file, writing data into it, later, send this file as an email attachment and then delete the file. --This entire thing is in while loop.
My problem:
I could create a file(in append mode,) write data into it and send it as an attachment. But,
I am not able to delete the file...
Here is the code.
code to create a file
<%!private void rowhdr()
                                                  try
                                                            System.out.println("Writing to file-rowhrd");
                                                  FileWriter fos = new FileWriter("C:/Ash/detail.txt",true);
                                                  BufferedWriter bw = new BufferedWriter(fos);
                                                  PrintWriter pw = new PrintWriter(fos, true);
                                                  pw.println("Gform No      Sales Prom.    Local Travel     Subspn         Entertainment    Telephone  Conf/Seminar  Mobile/Res_Tel    others   Advance    Ticketamt      Net    Remarks");
                                                  System.out.println("Finished writing-rowhrd");
                                                  } catch (IOException ioe) {
                                                            System.out.println( "Append IO error:" + ioe );
          %>code to delete the file
<%!private void createfile(boolean del)
                                                            try {
                                                                 File temp= null;                         
                                                                  temp= new File("C:/Ash/detail.txt");
                                                                      boolean ch=temp.createNewFile();
                                                                      if(ch)
                                                                           System.out.println("file created");
                                                                      else
                                                                           System.out.println("file Not created");
                                                                           System.out.println("del value in delete block="+del);
                                                                           if(del)
                                                                                               boolean er=temp.delete();
                                                                                               System.out.println("Erase="+er);
                                                                                               if(er)
                                                                                               System.out.println("file deleted");
                                                                      }//end of else pare of if-ch
                                                       } catch (IOException ioe)
                                                                           System.out.println( "Append IO error:" + ioe );
%>I am getting value of del=true, but er=false.
I don't know why?
can anyone help me please?
Regards, Thanks in advance.
Ashvini

Answer 1

I dont follow your post, but here's a simple program to open a file in "rw" mode, write to it and delete after 10 seconds. It works.
package com.my;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
public class FileWrite
    public static void main(String args[])
        try
            FileWriter fos = new FileWriter("path", true);           
            PrintWriter pw = new PrintWriter(fos, true);
            pw.println("Gform No      Sales Prom.    Local Travel     Subspn         Entertainment    Telephone  Conf/Seminar  Mobile/Res_Tel    others   Advance    Ticketamt      Net    Remarks");
            Thread.sleep(10000);
            pw.close();           
            fos.close();
            File f = new File("same path as given above");
            f.delete();
        catch (Exception ioe)
            System.out.println("Append IO error:" + ioe);
    }cheers,
ram.