Initial commit of Java backend to hidl-gen.

Change-Id: I38b62637df74d3e5daf702a8996502d0d5726033
diff --git a/ScalarType.h b/ScalarType.h
index 38b79d4..3e84597 100644
--- a/ScalarType.h
+++ b/ScalarType.h
@@ -31,6 +31,9 @@
 
     std::string getCppType(StorageMode mode, std::string *extra) const override;
 
+    std::string getJavaType() const override;
+    std::string getJavaSuffix() const override;
+
     void emitReaderWriter(
             Formatter &out,
             const std::string &name,