File Writting problem??????

[jspexception]

Code is::::


public static void getFile(String s) throws IOException
{

File f=new File(s);
boolean b=f.exists();
if(b)
{
System.out.println("File Exist ");
try
{
FileInputStream fstream = new FileInputStream(s);

DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
FileWriter fostream = new FileWriter("d:/report.txt");

//file is created on d:/report.txt

BufferedWriter out = new BufferedWriter(fostream);

while ((strLine = br.readLine()) != null) {

String line_allow="HELLO";
out.write(line_allow);

//but string is not written in file report.txt

}
}
catch(Exception e)
{

}
}
else
System.out.println("File Not Exist ");
}





Problem is the file report.txt does not contain anything?

blank file !!!
what is the problem in code???


help?????

[Tolls]

Code is::::

   public static void getFile(String s) throws IOException
     {
         
     File f=new File(s);
     boolean b=f.exists();
     if(b)
     {
         System.out.println("File Exist ");
         try
         {
              FileInputStream fstream = new FileInputStream(s);

  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
 FileWriter fostream = new FileWriter("d:/report.txt");

//file is created on d:/report.txt

  BufferedWriter out = new BufferedWriter(fostream);

    while ((strLine = br.readLine()) != null)   {

        String line_allow="HELLO";
          out.write(line_allow);

//but string is not written in file report.txt
         
  }
}
         catch(Exception e)
         {

         }
     }
     else
         System.out.println("File Not Exist ");
 }

help?????

First use code tags, otherwise the code is hard to read.
Next, never eat exceptions...always at the least do e.printStackTrace(), otherwsie you'll never know when something has gone wrong.

Also, your use of streams and readers is seriously confused. That DataInputStream is completely unecessary. It should be simply:

      BufferedReader br = new BufferedReader(new FileReader(f));

Also (and I suspect this could be your real problem) you don't seem to ever close the streams (which should be done in a finally block as part of the try/catch)?

[dheaven]

Perhaps this tutorial will come in handy:
Dystopian Code: Text File I/O in Java