Java Interview Q&A link

http://www.allapplabs.com/interview_questions/java_interview_questions.htm

http://www.techinterviews.com/simple-java-questions

http://www.javacertificate.net/interview_qns.htm

http://www.globalguideline.com/interview_questions/Questions.php?sc=Basic_and_Advance_Java_Programming_Interview_Questions_and_A

http://www.j2eebrain.com/

http://www.techinterviews.com/j2ee-interview-questions-and-answers