private void populateJCombBox() { String item = ""; for (Task t : this.session.getTasks()) { this.jComboBoxTask.addItem(t.getName()); for (Period p : t.getPeriods()) { item = t.getName() + " | " + p.getStartDate().getTime() + " - " + p.getEndDate().getTime() + " | " + p.getElapsedTime(); this.jComboBoxPeriod.addItem(item); } } }