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Java Java Data Structures - Retired Exploring the Java Collection Framework Meet the JCF

Posted by Shafeeq Ahmed
Shafeeq Ahmed
6,058 Points

Generics in Real World

Hey guys, I understand that using generics makes the code flexible. but can anyone give me an example of real world use of Generics. besides it helps avoid type casting issue.

2 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Shafeeq:

There are countless examples, but one that I like to use is that of a business doing invoices. If you have a type of Invoice you can then create a List<Invoice> to make sure that the list only has items of type Invoice in the list. If you just use ArrayList you increase the chances of having something other than an Invoice in your list.

Does that help at all?

Happy coding, Ken

Anoop Kumar
Anoop Kumar
1,715 Points

thnks ken..

Shafeeq Ahmed
Shafeeq Ahmed
6,058 Points
Shafeeq Ahmed
Shafeeq Ahmed
6,058 Points

Thanks sir You have even answered another question I had in mind about JCF