public void reset() { Road road = edgenode.getRoad(); if (road != null) { roadLink.setText(road.getName()); roadLink.setEnabled(true); nodeLink.setText(road.getOtherNode(edgenode).getName()); nodeLink.setEnabled(true); } else { roadLink.setText("null"); roadLink.setEnabled(false); nodeLink.setText("null"); nodeLink.setEnabled(false); } }