I am Sun Certified Java Enterprise Architect (took this in 2005). I just received a free voucher to take the OCMJEA 6 Beta Exam. Came across this when I was looking for resources to brush up my knowledge. My question to Amritendu is that is there a ebook version of your book available.
Sun Certified Java 2 Programmer
Sun Certified Java 2 Developer
Sun Certified Web Component Developer
Sun Certified Enterprise Architect
IBM Websphere Certified