Sunday, 28 July 2013

Blackrock interview

Q.1 How to use Comparator with collection?
Q.2 What is a serializable object? How to use it? When is it used? Is it used over networks?
Q.3 What are immutable objects?
Q.4 What is the big deal with java 1.5?
Q.5 If HashTable was always there, why come up with a HashMap?
Q.6 SQL query to get the second largest element in a table?

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