How to create a unique file name within a main()?

Question

I am creating a file using a button inside the main() .
Each time the button is clicked, new file should be created.
The file names should be distinct and differ in a number that follows the name for ex. MyFile1.txt, MyFile2.txt, MyFile3.txt and so on.
Any ideas?
thanks

Answer 1

I think you want that last line to readwhile (f.exists())  // note the absent "!"since your loop as coded will end up with a filename that does exist rather than one that does not exist. You might also tryint counter=0;
File f=null;
do
  f=new File("myfile" + counter++);
  while (!f.createNewFile()) // This will only create a file if it doesn't already exist.
Caution! You can't use the counter after you create the file because the counter will already be the next number. You can use f.getName(), or if you have a psychological need to use the counter, prefix the "++" and start with -1 (or just skip 0)
Doug