Intro Collections UnmodifiableList Posted on 2022-04-20 Edited on 2024-07-03 In Collections Views: Disqus: Symbols count in article: 217 Reading time ≈ 1 mins.Intro Collections UnmodifiableList這篇介紹Collections UnmodifiableList.Intro123如果要將list指定成只能讀，不能修改的話，要怎麼做呢?List<Account> list = Collections.unmodifiableList(resultList);若嘗試對list做寫入或修改時，會throw UnsupportedOperationException。