java.lang.NullPointerException at JavaTester.run(JavaTester.java:129) at JavaTester.main(JavaTester.java:41)

public class GameAdapter extends RecyclerView.Adapter<GameAdapter.GameViewHolder> {

    private Game[] mGames;

    public GameAdapter(Game[] games) {
        mGames = games;
    }

    @Override
    public GameViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return null;
    }

    @Override
    public void onBindViewHolder(GameViewHolder holder, int position) {
        // code omitted for brevity
    }

    @Override
    public int getItemCount() {
        return 0;
    }

    /* Add your code here */
   public static class GameViewHolder extends RecyclerView.ViewHolder {
     public TextView mTitleLabel;
     public GameViewHolder(View v){
      mTitleLabel = (TextView) v.findViewById(R.id.titleLabel);
     }
   }
}