How to preload jar classes?

[Marcus Leon]

The first request of a jsp page using a tag library (Display Tag
Library) is slow. I believe it is due to the JVM having to load a
whole bunch of classes. Is there a way to get the JVM to preload these
classes?

We're running Weblogic 8.1.

Thanks.

 

[Tor Iver Wilhelmsen]

The first request of a jsp page using a tag library (Display Tag
Library) is slow. I believe it is due to the JVM having to load a
whole bunch of classes. Is there a way to get the JVM to preload these
classes?

Add the JSP as a servlet in web.xml and declare its load-on-startup
element.

 

[Marcus Leon]

Thanks Tor. But it doesn't seem to work. Looks like that calls some
basic init method but it doesn't actually do the processing of the JSP
page where the vast majority of the classes are loaded.

 

[Roedy Green]

Is there a way to get the JVM to preload these
classes?

Running a piece of code that called some static method in each class
you wanted to preload would do it. Or you could look at a public
static field, e.g. serialVersionUID.

 

[Marcus Leon]

Thanks Roedy.. that did the trick!