CodesJava

Easy learning with example program codes

Collection framework in java


Collection is a simply an object that represents a group of objects into a single unit.

Collection framework:

Collection framework is a unified architecture or a set classes and interfaces for representing and manipulating collections. i.e. collection framework is used to store, retrieve and manipulate collections.

 Collection framework contains following:

  1. Interfaces: are abstract data types that represent collections and allow collections to be manipulated independently of the details of their representation.
  2. Classes/Implementations: are the concrete implementations of the collection interfaces.
  3. Algorithms: are the methods used for collection computations, like searching and sorting.

Advantages/Benefits of collection framework:

  1. Reduces programming effort: Collection framework provides useful data structure and algorithms for collection manipulation, you not have to write them.
  2. Increases program speed and quality: Collection framework provides high-performance and high-quality implementations of useful data structures and algorithms which increase the speed and quality.
  3. Resizable: Collection is resizable.
  4. Reduces effort to design new APIs: becausecollection framework eliminates the need to produce ad hoc collections APIs.

Disadvantages of collection framework:

  1. It must cast to correct type.
  2. It can’t be done compile-time type checking.
 Note: Above two disadvantages can be removed from collection framework by using generics.

Core Collection Framework interfaces are categories into two sets collections and maps.

Note: Maps are not the integral part of collection framework but are considered as collection because they can store and manipulate group of objects like collections.

 
Next Topic: Collection interfaces in java.
Previous Topic: Transient in java with example.

Related topics:

 

Sign Up/ Sign In
Ask a Question


Industrial Training

We offers Placement Oriented Training on Java, Spring, JSF, Hibernate, PHP, AngularJS, Angular 4, PLSQL, Oracle BI Publisher etc. We also provides Online training, please mail us at hr@codesjava.com.

Development

We also provides the Development services for Website Development , Java Development, PHP Development, Android App Development etc. You can contact us on hr@codesjava.com.

Copyright © 2018 CodesJava DMCA.com Protection Status SiteMap Reference: Java Wiki