Thread: BufferedReader - Freezes on 2nd read

You cannot reuse a BufferedReader like this - it has reached the end of the file and unless you use a RandomAccessFile (or some other class which allows you to reset the pointer) the file marker will remain at the end of the file (eg no second read). Not sure why you need to read the file twice...but you can just recreate the BufferedReader (be sure to close the Readers when you are done with them).

Thanks for the quick reply: here is some of my code:

This display's it:

public void display()
    {
        String line;
 
        try
        {
            line = from.readLine();
 
 
           while(!line.equals("EOF"))
           {
               System.out.println(line);
               line = from.readLine();
 
           }
 
         }
         catch(IOException e)
         {
            System.out.println("Error " + e.getMessage());
         }
 
    }

This saves it:

private void save()
    {
        try 
        {
            PrintWriter pwOutput = new PrintWriter(arg);
 
                String line = from.readLine();
                while(!line.equals("EOF"))
                {
                    pwOutput.println(line);
                    line = from.readLine();
                }
 
            pwOutput.flush();
            pwOutput.close();
        }
        catch (IOException e) 
        {
            System.out.println("Error " + e.getMessage());
        }
 
 
    }

Like I said, don't reuse the BufferedReader, and I'd also recommend not looking for "EOF" - the readLine returns null....so check for the returned string to be null. I'd recommend rewriting your code to take these into account. Depending upon what you wish to accomplish, you could read the file in once, and then use the read contents for the multiple tasks.