Yes, and they had big (and hilariously stupid) plans: http://web.archive.org/web/20090522144903/http://blogs.sun.com/jonathan/entry/will_java_be_the_world http:

Yes, and they had big (and hilariously stupid) plans: http://web.archive.org/web/20090522144903/http://blogs.sun.com/jonathan/entry/will_java_be_the_world http://web.archive.org/web/20090522144903/http://blogs.sun.c... How will it work? Candidate applications will be submitted via a simple web site, evaluated by Sun for safety and content, then presented under free or fee terms to the broad Java audience via our update mechanism. Over time, developers will bid for position on our storefront, and the relationships won't be exclusive (as they have been for search). As with other app stores, Sun will charge for distribution - but unlike other app stores, whose audiences are tiny, measured in the millions or tens of millions, ours will have what we estimate to be approximately a billion users. That's clearly a lot of traffic, and will position the Java App Store as having just about the world's largest audience.