Question

I have a very simple method:

public int getScore() {
    return game.gameWindow.userBestScore;
}

The problem is that it can happens that game object or gameWindow do not exist. I do not want to get the Null Pointer Exception. How can catch it in a correct way? Can I do it in this way:

   public int getScore() {
         try{
             return game.gameWindow.userBestScore;
          } catch(NullPointerException e){
              return -1;
          }
   }

Answer 1

You can do that. You can also check to see if game and gameWindow are null before trying to access userBestScore.

if(game != null && game.gameWindow != null)
    return game.gameWindow.userBestScore