add rules_java

Author: parthea

WORKSPACE

@@ -86,8 +86,6 @@ load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
 
 grpc_deps()
 
-# Pin the version of rules_cc to the version that is present in
-# https://github.com/protocolbuffers/protobuf/blob/29.x/protobuf_deps.bzl#L92-L98
 http_archive(
     name = "rules_cc",
     urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.1.1/rules_cc-0.1.1.tar.gz"],
@@ -99,6 +97,12 @@ load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps", "PROTOBUF_MAVE
 # This is actually already done within grpc_deps but calling this for Bazel convention.
 protobuf_deps()
 
+# Add rules_java to resolve the following error
+# `The repository '@compatibility_proxy' could not be resolved: Repository '@compatibility_proxy' is not defined`
+load("@rules_java//java:rules_java_deps.bzl", "rules_java_dependencies")
+
+rules_java_dependencies()
+
 # gRPC enforces a specific version of Go toolchain which conflicts with our build.
 # All the relevant parts of grpc_extra_deps() are imported in this  WORKSPACE file
 # explicitly, that is why we do not call grpc_extra_deps() here and call