devbible

읽기전용으로 List를 생성함. List에 modify 가 일어나면 UnsupportedOperationException 이 발생 List list = new anyList(); // any list (ArrayList, LinkedList other..) list.add(any); List readOnlyList = java.util.Collections.unmodifiableList(list); readOnlyList.get(index); // OK readOnlyList.set(index, any); // throw UnsupportedOperationException readOnlyList.add(any); // throw UnsupportedOperationException readOnlyLis..