Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

What are decalarations?

850

What are facelets templates?

790

what is the purpose of using rmisecuritymanager in rmi?

764

What is the tradeoff between using an unordered array versus an ordered array?

919

Why we override equals() method?

775

What is the advantage of preparedstatement over statement?

821

What is the default size of load factor in hashing based collection?

804

What is difference between jdk,jre and jvm?

796

What is the difference between processes and threads?

760

What is the main difference between java platform and other platforms?

708

What is the difference between sleep and wait in java?

719

Explain java heap space and garbage collection?

789

What is meant by binding in rmi?

773

Can we call the run() method instead of start()?

796

How do weakhashmap works?

843

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Un-Answered Questions { Core Java }

Lowest Common ancestor in a Binary Search Tree and Binary Tree.

760

Can we override compareto method?

721

Is string passed by reference in java?

760

How do you clear a list in java?

811

What is the relationship difference the canvas class and the graphics class?

802

What is the reason behind using constructors and destructors?

797

What are exception handling keywords in java?

809

Is int a class in java?

723

Explain wait(), notify() and notifyall() methods of object class ?

814

Are global variables initialized to zero?

709

Explain different states of a thread in java?

801

What is java ceil?

779

How do you escape in java?

806

What is callablestatement? How you can call stored procedure to pass in parameter?

759

How do you pass by reference?

745

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