This code should not raise NullPointerException if ( helmet != null ) { Float helmetArmor = helmetValues.get(helmet.getType(); if ( helmetArmor != null ) { armorValue += helmetArmor ; } } Maybe your player has not helmet? 1 solved HashMap get method returns NullPointerException
In hashmap, yes you can include custom types as Key/Value pair. but that should not be object , it must of clearly a type . means a class you can mention which becomes type for custom types. example , you can define String type variable as String s = “abc”; now if we try to … Read more
You should be able to remove the entry with: Map.remove(key) solved what is the method to delete hashmap entry
this is previous code on my custom adapter: @Override public Object getItem(int position) { // TODO Auto-generated method stub return (position); } and this is solved code in my custom adapter: @Override public Object getItem(int position) { // TODO Auto-generated method stub return data.get(position); } in which datais defined as ArrayList<HashMap<String, String>> data; solved Integer … Read more