Java Collection is the most important API which is being used. There are different collection which can be used to manipulate the collection of objects as per requirement like sorting, searching, add, update or delete.
In almost every project, we need to manipulate the objects or we need something to store the list of object to perform some action on them later. Java provided the collection framework which has wide variety of APIs.
This tutorial will cover most of the topics like Collection, Collection Framework, List, Set, Map, ArrayList, Vector, HashSet, LinkedHashSet, SortedSet, HashMap, LinkedHashMap, SortedMap, NavigableMap, HashTable, Concurrent, Queue, ArrayDeQue and much more.
LinkedList Java A LinkedList just like an ArrayList, except that the elements are doubly linked to each other in the list. The elements in the LinkedList are ordered by index position like ArrayList. As we know in LinkedList each elements Read More …
Java Vector Vector and Hashtable were two original collections which were added with java 1.2 and 1.4 vesions respectivly. Vector is not different from the ArrayList but Vector methods are synchronized for thread safety. If you want thread safety then Read More …
Java Set A Set cares about the element uniqueness in the list. Set does not allow duplicate elements. A Set checks for the uniqueness of the elements in the list with the help of equals() method. If it founds the Read More …
Java HashSet Java HashSet class implements Set interface. The elements in the HashSet collection are unsorted and unordered. Basically HashSet uses hashCode() to determine the location for the object being inserted into the list. So it is important to write Read More …
Java LinkedHashSet A LinkedHashSet is just like the HashSet but it is an ordered collection. Elements in the LinkedHashSet maintain insertion order. LinkedHashSet uses doubly linked list data structure to insert the elements in the list. While accessing the elements Read More …