Jar -t doesn't work? .. and how to find a package?

Question

I've got JDK 1.4.1 installed on RedHat 8.0, and jar -t doesn't seem to work at all. Anyone else experienced this? (it just hangs).
I'm using's Sun's jar - but I get the same result if I try the jar command that follows linux (jar (fastjar) 0.92-gcc)
Also, when I get the message e.g. "package javax.servlet.http" does not exist - what's a fast way to figgure out which .jar from the XML Summer Pack I need to include?? I could start browsing the docs, but that's tedious work. I want to be able to say; "ah, that means that blabla.jar is missing" and include it .. that shouldn't be too much to ask ..
So I wanted to create a shell script that recursively scanned through all the jars and found the jar with the named package .. however, my .sh skillz are not that elite.
Feel free to answer with shell code =)

Answer 1

I call this script 'findclass'
#!/usr/bin/perl -w
$pat = shift;
foreach $jar (@ARGV) {
  open(JAR, "jar tvf $jar|");
  while(<JAR>) {
    print "$jar: $_" if /$pat/;
  close JAR;
}Cheers, Neil