Hello JXTA (JRuby Style)

So the original Java version was 42 lines

hello is a short wrapper shellscript to set the classpath to:

$HOME/java/jxta.jar:$HOME/java/bcprov-jdk14.jar:$HOME/java/jxtaext.jar:$HOME/java/log4j.jar

and ran jruby jxtahello.rb

which is

require 'java'

include_class "net.jxta.peergroup.PeerGroup"
include_class "net.jxta.peergroup.PeerGroupFactory"
include_class "net.jxta.exception.PeerGroupException"

npg = PeerGroupFactory.newNetPeerGroup()
puts "Hello from JXTA group " + npg.getPeerGroupName().to_s
puts " Group ID = " + npg.getPeerGroupID().to_s
puts " Peer name = " + npg.getPeerName().to_s
puts " Peer ID = " + npg.getPeerID().to_s
npg.stopApp()

And when executed prints pretty much the same:

franz-g4:~/Desktop/jxta/ruby mdfranz$ ./hello
INFO  2007-06-09 15:49:55,134 NullConfigurator:::132 JXTA_HOME = file:/Users/mdfranz/Desktop/jxta/ruby/.jxta/
INFO  2007-06-09 15:49:55,305 NullConfigurator::adjustLog4JPriority:316 Log4J [user default] requested, not adjusting logging priority
INFO  2007-06-09 15:49:56,681 NullConfigurator::adjustLog4JPriority:316 Log4J [user default] requested, not adjusting logging priority

Hello from JXTA group NetPeerGroup
Group ID = urn:jxta:jxta-NetGroup
Peer name = bobo
Peer ID = urn:jxta:uuid-59616261646162614A7874615032503399A33A2EB7BB47E5BA108F6B6D2BDF3203

This probably the shortest JXTA code shows the real power of JRuby in prototyping and learning JAVA APIs.

BTW, all the JXTA examples are up at http://www.threatmind.net/jxta