http://java.sun.com/developer/Quizzes/javaserverpages.html
JSP java server pages quiz , questions by java.sun.com

http://www.javaranch.com/carl/scwcd/WCDStudyNotes-Michelle.pdf
study guide in PDF format by javaranch.com.It also has very famous forum for java certification exms

http://jakarta.apache.org/taglibs/tutorial.html
This tutorial will give you an overview of how some of the basic tags in the Jakarta-Taglibs library were created. Tag libraries allow you to create custom actions and encapsulate functionality

Top Free Java SCWCD Certification Exams
List of java scwcd certifications available in the net. Compiled list by java.about.com

SCWCD Resources

SCWCD  Personal collection for SCWCD Questions ,Mock exam and Results