add rules_java

WORKSPACE

@@ -50,6 +50,18 @@ http_archive(
 load("@bazel_features//:deps.bzl", "bazel_features_deps")
 bazel_features_deps()
 
+# TODO: something is depending on an old version of rules_java
+http_archive(
+    name = "rules_java",
+    urls = [
+        "https://github.com/bazelbuild/rules_java/releases/download/7.4.0/rules_java-7.4.0.tar.gz",
+    ],
+    sha256 = "976ef08b49c929741f201790e59e3807c72ad81f428c8bc953cdbeff5fed15eb",
+)
+load("@rules_java//java:repositories.bzl", "rules_java_dependencies", "rules_java_toolchains")
+rules_java_dependencies()
+rules_java_toolchains()
+
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 
 protobuf_deps()