The standard collection classes are summarized in the following table:
Class Description
AbstractCollection Implements most of the Collection interface.
AbstractList Extends AbstractCollection and implements most of the List interface.
AbstractSequentialList Extends AbstractList for use by a collection that uses sequential rather than random access of its elements.
LinkedList Implements a linked list by extending AbstractSequentialList.
ArrayList Implements a dynamic array by extending AbstractList.
AbstractSet Extends AbstractCollection and implements most of the Set interface.
HashSet Extends AbstractSet for use with a hash table.
LinkedHashSet Extends HashSet to allow insertion-order iterations.
TreeSet Implements a set stored in a tree. Extends AbstractSet.