Question: What is the difference between servlets and Java Server Pages? Which is preferred?
Answer: Servlets and Java Server Pages are complementary APIs, both providing
a means for generating dynamic Web content. A servlet is a Java
class implementing the javax.servlet.Servlet interface that runs
within a Web or application server's servlet engine, servicing client
requests forwarded to it through the server. A Java Server Page is a
slightly more complicated beast. JSP pages contain a mixture of HTML,
Java scripts (not to be confused with JavaScript), JSP elements,
and JSP directives. The elements in a Java Server Page will generally
be compiled by the JSP engine into a servlet, but the JSP specification
only requires that the JSP page execution entity follow the Servlet
Protocol.
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