PrintWriter create empty file

Question

I have StringBuilder sb and I want that string save as *.txt file. Problem is that I get \"filename.txt\" but it is completely empty,

Answer 1

Either create your PrintWriter with this constructor, changing the first argument to an OutputStream:

out = new PrintWriter(new FileOutputStream("filename.txt"), true);

to turn on auto flushing, or, just close the writer once you're done writing to it with out.close().

Answer 2

You should use out.close() statement in this program.

Answer 3

out.close (); is missing. You have to put it in to close the session.

Answer 4

   PrintWriter out;
   try{
       out = new PrintWriter("filename.txt");
       out.println(sb.toString());
       //add the below lines
       out.flush();
       out.close();
   }catch (Exception e) {
       e.printStackTrace();
   }

Another way is to have a PrintWriter with autoFlush on. That can be achieved by

  out = new PrintWriter(new FileOutputStream("filename.txt"), true);

If you do only out.close() that would also solve the problem at hand as that would internally flush the content written in its internal buffer.

Hope this helps.