What is Wrapper Class and Use of Wrapper Class in Salesforce?

A wrapper or container class is a class, a data structure, or an abstract data type whose instances are collections of other objects.
In Apex and Visualforce this type of class can be extremely useful to achieve lot of businees scenario.

Use of Wrapper Class in Salesforce:

Using Wrapper class for displaying records from two or three or more objects in a single table (based on the businees logic).

Example:
Sometimes we need to display data from different objects (not related to each other) in a table.

Click to see more:
http://wiki.developerforce.com/page/Wrapper_Class
http://www.interactiveties.com/b_visualforce_wrapper_class.php
http://www.interactiveties.com/blog/2012/visualforce-heap-size.php

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I am Sakthivel Madesh, a certified Salesforce Advanced Developer & Administrator working on Salesforce Technology since 2011. I am currently working in Techforce Services as Sr. Salesforce Developer. I have worked on multiple technologies Like PHP, Java, Salesforce, I am very passionate about Salesforce and to earn 15x Salesforce Certification. I love Trailhead for learning Salesforce Skill and Become a Trailhead 5x Ranger too. I Love to Learn & Share my Salesforce knowledge to Salesforce Learners/Beginner using My Blog and Salesforce Community.

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