add jruby support by protobuf-java reflection API
diff --git a/ruby/lib/google/protobuf.rb b/ruby/lib/google/protobuf.rb
index 7405333..75869dd 100644
--- a/ruby/lib/google/protobuf.rb
+++ b/ruby/lib/google/protobuf.rb
@@ -28,4 +28,9 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-require 'google/protobuf_c'
+if RUBY_PLATFORM == "java"
+ require 'json'
+ require 'google/protobuf_java'
+else
+ require 'google/protobuf_c'
+end
