How to Create a Wrapper Class In Batch Apex

we can build a list of your custom wrapper class in your execute method, and maintaining that list at the class instance level.
You then want to use the created wrapper list in the finish method of Batch Apex.

If so try using the Database.stateful interface in your Batch APEX class:
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_batch_interface.htm

See: Database.Stateful

Note: Please use careful, since maintaining these objects adds to your total heap size usage

What is Wrapper Class?

http://theblogreaders.com/what-is-wrapper-class-and-use-of-wrapper-class-in-salesforce/
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_batch_interface.htm

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I am Sakthivel Madesh, a certified Salesforce Developer & Administrator working on Salesforce Technology since 2011. I am currently working in IBM Austraila as Sr. Salesforce Developer. I have worked on multiple technologies Like PHP, Java, Salesforce, I am very passionate about Salesforce and to earn 10 Salesforce Certification. I love Trailhead for learning Salesforce Skill and Become a Trailhead Ranger too. I Love to Learn & Share my Salesforce knowledge to Salesforce Learners/Beginner using My Blog and Salesforce Community.

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