protected Collection getActions() { ArrayList actions = new ArrayList(); actions.add(getCreateOWLDatatypePropertyAction()); Action createSubPropertyAction = getCreateSubpropertyAction(); createSubPropertyAction.putValue( Action.SMALL_ICON, OWLIcons.getCreatePropertyIcon("DatatypeSubProperty")); actions.add(createSubPropertyAction); getDeletePropertyAction() .putValue(Action.SMALL_ICON, OWLIcons.getDeleteIcon("OWLDatatypeProperty")); return actions; }