add java example and missing cvsignore files

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8137 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/ruby/java/runme.rb

@@ -0,0 +1,16 @@
+require 'example'
+
+Example.JvCreateJavaVM(nil)
+Example.JvAttachCurrentThread(nil, nil)
+
+e1 = Example::Example.new(1)
+e2 = Example::Example.new(2)
+
+print e1.Add(1,2),"\n"
+print e1.Add(1.0,2.0),"\n"
+e3 = e1.Add(e1,e2)
+print e3.mPublicInt,"\n"
+
+
+Example.JvDetachCurrentThread()
+