# File ruby/jbridge.rb, line 1023
        def register_finalizer(proxy)
          @@object_lock.synchronize {
                @@object_id_table[proxy.__id__] = proxy.__object_id
                counter = @@object_ref_counter[proxy.__object_id]
                if counter then
                  counter += 1
                else 
                  counter = 1
                end
                print_debug "     ----GC: #{counter} : #{proxy.__object_id}"
                @@object_ref_counter[proxy.__object_id] = counter
                if (!proxy.kind_of?(JObject)) then
                  raise RuntimeError.new("GC: different object: #{proxy.to_s}")
                end
                ObjectSpace.define_finalizer(proxy, JGCManager.get_finalizer_proc)
          }
          exec_finalizable_objects
        end