public static Object[] getAlleWeken(int jaar){
		ArrayList<Integer> weken = new ArrayList<Integer>();
		for(Weekplanning w:alleWeekplanningen){
			boolean found = false;
			for(Integer i:weken){
				if(w.getJaar() != jaar || w.getWeeknr() == i ){
					found = true;
				}
			}
			if(!found){
				weken.add(w.getWeeknr());
			}
		}
		Object[] result = new Object[weken.size()];
		for(int j = 0; j < result.length;j++){
			result[j] = "" + weken.get(result.length - j - 1);		
		}
		return result;
	}