Can Java Servlet be implemented with Standard Tag Library

[Francis Siu]

thanks for your time to answer

[Lasse Koskela]

First, let's get some things straight:
1) The container compiles your JSPs into servlet source code and compiles that into a .class file
2) JSTL/taglibs is used by JSP code to encapsulate logic ("separate the logic from the HTML code")
In other words, the JSP using JSTL or custom taglibs is always transformed into a servlet through a couple of compilation steps by the container.

[Jason Menard]

Aside from the fact that a JSP is a servlet, if you are asking whether or not JSP tags can be used directly inside servlet code, the answer is no.