What is the difference between and ?.

Both the tag includes the information from one
page in another. The differences are as follows:
: This is like a function
call from one jsp to another jsp. It is executed ( the
included page is executed and the generated html
content is included in the content of calling jsp)
each time the client page is accessed by the client.
This approach is useful to for modularizing the web
application. If the included file changed then the new
content will be included in the output.

<%@ include file = ... >: In this case the content of
the included file is textually embedded in the page
that have <%@ include file=".."> directive. In this
case in the included file changes, the changed content
will not included in the output. This approach is used
when the code from one jsp file required to include in
multiple jsp files.