public void initializeActiveSlotsList(String slots){
  if (activeSlotsList == null) {
    activeSlotsList=new ArrayList<String>();
  }
  for (  String s : slots.split(";")) {
    activeSlotsList.add(s);
  }
}

public void initializeActiveSlotsList ( String slots ) { if ( activeSlotsList == null ) { activeSlotsList = new ArrayList < String > ( ) ; } for ( String s : slots . split ( ";" ) ) { activeSlotsList . add ( s ) ; } }
add slots to list where slotactivateditem can be activated when equipped .
