diff --git a/compiler/src/java_plugin/cpp/java_generator.cpp b/compiler/src/java_plugin/cpp/java_generator.cpp
index 8110f3d55f..c4c69b5e25 100644
--- a/compiler/src/java_plugin/cpp/java_generator.cpp
+++ b/compiler/src/java_plugin/cpp/java_generator.cpp
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2019 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 #include "java_generator.h"
 
 #include <algorithm>
diff --git a/compiler/src/java_plugin/cpp/java_generator.h b/compiler/src/java_plugin/cpp/java_generator.h
index 7e2c1a8fe0..41a7fc093f 100644
--- a/compiler/src/java_plugin/cpp/java_generator.h
+++ b/compiler/src/java_plugin/cpp/java_generator.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2019 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 #ifndef NET_GRPC_COMPILER_JAVA_GENERATOR_H_
 #define NET_GRPC_COMPILER_JAVA_GENERATOR_H_
 
diff --git a/compiler/src/java_plugin/cpp/java_plugin.cpp b/compiler/src/java_plugin/cpp/java_plugin.cpp
index fff219177e..098a4db217 100644
--- a/compiler/src/java_plugin/cpp/java_plugin.cpp
+++ b/compiler/src/java_plugin/cpp/java_plugin.cpp
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2019 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 // Generates Java gRPC service interface out of Protobuf IDL.
 //
 // This is a Proto2 compiler plugin.  See net/proto2/compiler/proto/plugin.proto