Collections in JAVA | Collection Framework |

 

What is Collection

Any group of individual objects which are represented as a single unit is known as a collection.

A collection in JAVA is an interface. While Collections is a class

The collection framework consists of 

• List
• Queue
• Set

 

List 

• ArrayList 
• LinkedList
• Vector
• Stack

Queue

• PriorityQueue 
• LinkedList
• Deque  (Double-Ended Que)
• ArrayDeque

Set

• HashSet 
• LinkedHashSet
• SortedSet
• TreeSet

Map (This is not part of the collection framework)

• HashMap
• LinkedHashMap
• SortedMap
• TreeMap
• Hashtable