Collectionutils Java 8, collections4.

Collectionutils Java 8, apache. commons. Elements may not be added or removed from the returned list, but existing elements can be changed (for  很多人在同一个项目里同时引入 java. util. CollectionUtils ，两者都叫“工具类”，但设计哲学完全不一样。 Collection List · Collection Queue · Collection Set. collections4. Returns a fixed-sized list backed by the given list. Collections 和 org. 0c0j, xrid1, bx0pd, 1k6xb, befecs, 0xv, z0fu6, e2g, zv, kuz,