Write into or create Text File on android internal or External Storage

try {
   if (writeFile("sdcard/strs.txt", "My string runs here"))
    Log.i("WriteFil", "Success");
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

Here the method:

/**
  * This method to create text file or append to a text file
  * 
  * @param fullFileLocationBathWithNameAndExten
  *            like "sdcard/strs.txt"
  * @param text
  *            : the text which will be written in the file
  * @return: sucess if the process finished successfully
  * @throws IOException
  *             : error in creating the file
  */
 public boolean writeFile(String fullFileLocationBathWithNameAndExten,
   String text) throws IOException {
  File file = new File(fullFileLocationBathWithNameAndExten);
  if (!file.exists()) {

   file.createNewFile();

  }

  // BufferedWriter for performance, true to set append to file flag
  BufferedWriter buf = new BufferedWriter(new FileWriter(file, true));
  buf.append(text);
  buf.newLine();
  buf.close();

  return true;

 }