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15 Java Enum Interview Questions for Developers with Answers

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Javin Paul

Posts: 1090
Nickname: javinpaul
Registered: Jan, 2012

Javin Paul is Java Programmer working on Finance domain.
15 Java Enum Interview Questions for Developers with Answers Posted: Jul 22, 2013 8:22 AM
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Enum was introduced in Java 5 and since then it's been very popular among Java developers and widely used in different Java applications. Since Enum in Java is much more versatile than Enum in C or C++, it also presents lots of interesting use cases, couple of them, we have seen in my article 10ways to use Enum in Java. But, despite being so popular, many Java programmer are still not aware of functionality provided by Enum and subtle details of using Enum in Java code. I realized this fact, when couple of my readers asked me some of the questions e.g. Can Enum implement an interface in Java or Why we can not create Enum instances outside of Enum, stating that these has been asked to them in there Java Interviews. This motivates me to put together a list of frequently asked question in Java Enum, which not only helps to do well in Interviews, but also open new path for learning. As I had said before, lot of time a question in Interviews, makes you to take a topic more seriously than otherwise, which is not a bad thing, and given the power and facilities offered by Java Enum, I think it's high time to get master of it.

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