Set interface extends Collection interface. In a set, no duplicates are allowed. Every element in a set must be unique. You can simply add elements to a set, and duplicates will be removed automatically. 理解:Set中不包含重复元素.Set有三种实现方式:HashSet,TreeSet和LinkedHashSet这三种.当你需要...
1. Set Interface Set interface extends Collection interface. In a set, no duplicates are allowed. Every element in a set must be unique. You can simply add elements to a set, and duplicates will be removed automatically. 2. HashSet vs. TreeSet vs. LinkedHashSet HashSet is Implemented usi...
Methods inherited from interface java.util.Collection parallelStream,removeIf,stream Methods inherited from interface java.lang.Iterable forEach Constructor Detail LinkedHashSet public LinkedHashSet(int initialCapacity, float loadFactor) Constructs a new, empty linked hash set with the specified initial capac...
LinkedHashSetis in some sense intermediate betweenHashSetandTreeSet. Implemented as a hash table with a linked list running through it, howeverit provides insertion-ordered iteration which is not same as sorted traversal guaranteed by TreeSet. So choice of usage depends entirely on your needs but...