Save File in APDE

I am trying to save a highscore in APDE. I am currently trying to create the file

File highscoreData= new File("//storage/emulated/0/JGameData","highscore.txt");
if (highscoreData.exists()){
      highscore=0;
      highscoreArray = loadStrings("//storage/emulated/0/JGameData/highscore.txt");
      highscore=float(highscoreArray[0]);
      }
      else {
        highscoreData.mkdir();
        highscoreData.createNewFile();
      }
}

but I just get an unhandled IOException Error. What am I doing wrong?

@Janvonfalken ====
i dont use APDE but i think that in this case you can easily avoid this error coding like that:

File highscoreData= new File("//storage/emulated/0/JGameData","highscore.txt");
if (highscoreData.exists()){
      highscore=0;
      highscoreArray = loadStrings("//storage/emulated/0/JGameData/highscore.txt");
      highscore = float(highscoreArray[0]);
      }
      else {
        highscoreData.mkdir();
         try {
        highscoreData.createNewFile();
         }catch(IOException e){
           println(e);
         }
      }

Thanks for the answer, I tried a catch block but it didnt seem to work, it just didnt throw an error. Doesnt matter though, I solved the peoblem with Shared Preferences.

@Janvonfalken ===
In this type of case SharedPreferences is the STANDARD simple && good solution!