Initial commit of Java backend to hidl-gen.

Change-Id: I38b62637df74d3e5daf702a8996502d0d5726033
diff --git a/generateCpp.cpp b/generateCpp.cpp
index a8f95a6..51e8143 100644
--- a/generateCpp.cpp
+++ b/generateCpp.cpp
@@ -79,7 +79,7 @@
             out << "namespace " << component << " {\n";
         }
 
-        out.setNamespace(mPackage.cppNamespace());
+        out.setNamespace(mPackage.cppNamespace() + "::");
     } else {
         out.setNamespace(std::string());