import javax.swing.*; class TidFormular extends Formular{ private JTextField startnrField, tidField; public TidFormular(){ startnrField = addJTextArea("Startnr:", 3); tidField = addJTextArea("Tid:", 3); } public int getStartnr(){ return Integer.parseInt(startnrField.getText().trim()); } public double getTid(){ return Double.parseDouble(tidField.getText().replace(',', '.').trim()); } }