oops concept click the following link

http://www.interview-made-easy.com/p/c-faqs.html

http://www.coolinterview.com/type.asp?iType=143


http://www.techinterviews.com/master-list-of-java-interview-questions


http://www.bestsamplequestions.com/technical-questions/cpp-sample-questions/cpp-sample-questions.html

http://www.dotnetfunda.com/interview/showcatquestion.aspx?category=42

http://ananddesai.wordpress.com/2007/12/24/oops-interview-questions-and-answers-part-1/


http://www.roseindia.net/java/simple-java-program.shtml


http://www.java-samples.com/showtutorial.php?tutorialid=13


http://javapgms.blogspot.com/