To Read

http://javarevisited.blogspot.in/2012/12/how-classloader-works-in-java.html

http://javarevisited.blogspot.ca/2011/01/how-classpath-work-in-java.html


http://www.mkyong.com/java-best-practices/understand-the-serialversionuid/


https://en.wikipedia.org/wiki/List_of_Java_virtual_machines
http://tutorials.jenkov.com/java-concurrency/volatile.html

Go thro all the articles from this blog
http://tutorials.jenkov.com/java-concurrency/deadlock.html

http://www.java2novice.com/java-interview-questions/

http://www.programmerinterview.com/index.php/java-questions/does-java-pass-by-reference-or-by-value/

http://hexriver.blogspot.in/2011/07/java-singleton-cache.html