I have a class file not the source.

No problem, Inline::Java handles that too. Just use the STUDY and AUTOSTUDY options. I'm using Inline::Java to access a 3rd-party vendor's API right now and it's working great.

-sam

#! /usr/bin/perl -w

use strict;
use warnings;
use Data::Dumper;

use Inline (    Java => 'STUDY',
        STUDY => ['com.verity.search.VSearch'],
        AUTOSTUDY => 1,
        );

use Inline::Java qw(caught) ;


eval
{
    my $search = new com::verity::search::VSearch();
    $search->setServerSpec('localhost:9900');
    $search->setK2UserName('inman');
    $search->setK2Password('xxxxx');
    my $ticket = $search->k2Login();;
    my $colls = $search->collectionsInfo();
    
    my $collCount = $colls->count();
    foreach (0..$collCount-1)
    {
        my $coll = $colls->at($_);
        print "Collection: ".$coll->getAlias."\n";
    }
    
    $search->addCollection ('verity_doccoll');
    $search->setQueryText('*');
    my $result = $search->getResult();
    print "Docs Found: ", $result->{docsFound};
    };

if ($@)
{
      if (caught("java.lang.Exception"))
      {
         my $msg;
         $msg = ($@->getMessage());
         print "Exception $msg\n"; # prints ouch!
      }
      else
      {
         # It wasn't a Java exception after all...
         die $@ ;
      }
}
[download]

Instead of copy-and-pasting the source of the orginal class, you could make a simple class that imports the orginal class and dispatches its methods back there.