private void loadAvalibleData() {
        // fill cbKompetens
        cbKompetens.removeAllItems();
        try {
            ArrayList<String> komptemp = DB.fetchColumn("select kid from kompetensdoman");
            ArrayList<Kompetensdoman> komp = new ArrayList<>();
            for (String k : komptemp) {
                komp.add(new Kompetensdoman(Integer.parseInt(k)));
            }
            for (Kompetensdoman k : komp) {
                cbKompetens.addItem(k);
            }
        } catch (InfException e) {
            e.getMessage();
        }
        // fill cbNiva
        cbNiva.removeAllItems();
        for (int i = 1; i <= 4; i++) {
            cbNiva.addItem("Nivå " + i);
        }
        // fill cbPlattform
        cbPlattform.removeAllItems();
        try {
            ArrayList<String> platttemp = DB.fetchColumn("select pid from plattform");
            ArrayList<Plattform> platt = new ArrayList<>();
            for (String s : platttemp) {
                platt.add(new Plattform(Integer.parseInt(s)));
            }
            for (Plattform p : platt) {
                cbPlattform.addItem(p);
            }
        } catch (InfException e) {
            e.getMessage();
        }
    }