Robert--
>Trying to optimize JAR performance. We have a JAR that is 700K using
>JDK1.1.7 and are looking for ways to improve the performance when using
>it. At this time we cannot migrate to Java2 and utilize the
>JArURLConnection. Does anyone have any suggestions? We would like to
>split the JAR into two JARs: 1 for GUI and one for CORE components but
>have run into difficultly due JAR loading at the 1.1 level. Additinoally,
>we have looked into client side install with class date checking sort of a
>Smart Update...
>
>From the context of what you're saying, I'm guessing that you're running a
Java application and not an applet on the client. What I can suggest is
that you write a custom ClassLoader that uses java.net.URL to connect to a
given web server, check dates (against the .jar in your local path),
download the .jar if necessary, then proceed with normal class loading
(which is probably your "SmartUpdate" idea in a nutshell).
Are your jars compressed? JDK 1.1 had a problem with compressed .jars, as I
recall, but I'm not 100% sure of that.
Alternatively, I don't see any reason why you couldn't pull the source for
URLClassLoader out of 1.2, put it into your own "java2" package, and use it
within java 1.1..... You'd have to make a few source modifications to
adjust for the changed ClassLoader rules in 1.2, but that shouldn't be
rocket science.
>Any past experience in this area would be helpful...
>
I haven't done this precise thing, but I've done a lot of work with
ClassLoaders; I'll be happy to help as best I can.
Hope any of this rambling makes sense or helps out....
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