Some useful java & eclipse knowledge website

Java Technich Tips

http://www.javaworld.com
http://www.java-tips.org/
http://www.oracle.com/technetwork/java/jdctechtips-142873.html
http://www.dailyjavatips.com/

Eclipse Tips

http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Ftips%2Fplatform_tips.html
http://eclipsesource.com/blogs/2012/10/26/top-10-tips-how-to-be-more-productive-with-the-best-ide/
http://javalessons.com/eclipse/eclipse-tips.html
http://www.javaworld.com/javaworld/jw-08-2005/jw-0829-eclipse.html
http://technonstop.com/eclipse-tips-and-tricks-to-increase-efficiency
http://www.eclipse-tips.com/