JSP 1.0 does not support custom tags. Only JSP 1.1.
Sounds like a "job for" <jsp:include page="scriptlet.jsp"/>
Off the top of my head (or what's left of it!), you could code the scriptlet solely in that JSP.
Admonition: (In general) don't use scriptlets especially in Enterprise environments where HTML coders and so-called "Page Designers" are the ones who are going to be "doing" the JSPs.
They are not programmers (nor do they play one on TV!) and they wish they didn't have to learn
Java just to keep their jobs.
This need has been recognized from day one and in the "old days", the name "Architecture type 2" was coined for the architecture in which "presentation" (the coding of a JSP which of course is translated to HTML so any browser can see it) is as much separated as possible from business logic (the
"if then elses" and
new thisOrTheOther() of Java code etc...)
