private void createFile(int number,String extention){
  for (int i=0; i < number; i++) {
    try {
      BufferedWriter output=new BufferedWriter(new FileWriter(new File(textInputFolder + "/File" + String.valueOf(i)+ extention)));
      try {
        output.write("File number ");
        output.write(String.valueOf(i));
      }
  finally {
        output.close();
      }
    }
 catch (    IOException e) {
      e.printStackTrace();
    }
  }
}

private void createFile ( int number , String extention ) { for ( int i = 0 ; i < number ; i ++ ) { try { BufferedWriter output = new BufferedWriter ( new FileWriter ( new File ( textInputFolder + "/File" + String . valueOf ( i ) + extention ) ) ) ; try { output . write ( "File number " ) ; output . write ( String . valueOf ( i ) ) ; } finally { output . close ( ) ; } } catch ( IOException e ) { e . printStackTrace ( ) ; } } }
this private method just creates a number of files with a specific extension .
