What are the main interfaces in Java Collections Framework?

What are the main interfaces in Java Collections Framework?

Interfaces of Java Collection Framework

• The Collection Interface. It is at the top of collection heirarchy and must be implemented by any class that defines a collection.
• The List Interface.
• The Set Interface.
• The Queue Interface.
• The Dequeue Interface.

What are the three basic interfaces of Java Collections Framework?

Three Types of Collection The base interfaces for ordered lists are called List and Queue. Dictionaries/Maps store references to objects with a lookup key to access the object’s values. One example of a key is an identification card. The base interface for dictionaries/maps is called Map.

What is an UnsupportedOperationException in Java?

The UnsupportedOperationException is one of the common exceptions that occur when we are working with some API of list implementation. It is thrown to indicate that the requested operation is not supported. This class is a member of the Java Collections Framework. ArrayList extends java.

What are Collection interfaces in Java?

Interface group is a unit to group logical interfaces together. For example you can group interfaces which is related to each other e.g. Account and Contact to one interface group. Interface group is the object user define at configuration time.

What are different interfaces in collections API?

Consistent API: The API has a basic set of interfaces like Collection, Set, List, or Map, all the classes (ArrayList, LinkedList, Vector, etc) that implement these interfaces have some common set of methods.

What are the two types of interfaces in collection framework?

Collection Interfaces

• util. Set.
• util. SortedSet.
• util. NavigableSet.
• util. Queue.
• util. concurrent. BlockingQueue.
• util. concurrent. TransferQueue.
• util. Deque.
• util. concurrent. BlockingDeque.

Why collection is a framework?

The Collections in Java provides an architecture to store and manipulate the group of objects, interfaces and classes. This java collection is a framework. This framework provides many interfaces (Queue, Set, List, Deque) and classes ( PriorityQueue, HashSet, ArrayList, Vector, LinkedList, LinkedHashSet).

Is collection a framework?

The Collection in Java is a framework that provides an architecture to store and manipulate the group of objects. Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes (ArrayList, Vector, LinkedList, PriorityQueue, HashSet, LinkedHashSet, TreeSet). …