diff --git a/library/src/main/java/com/scwang/wave/ColorRes.java b/library/src/main/java/com/scwang/wave/ColorRes.java
index 3da7db60fd7f970aff22a089ec8174d604283897..ae5d61ab38a9b48c2c851d9dc0986cffeab77501 100644
--- a/library/src/main/java/com/scwang/wave/ColorRes.java
+++ b/library/src/main/java/com/scwang/wave/ColorRes.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
 package com.scwang.wave;
 
 import java.lang.annotation.*;
diff --git a/library/src/main/java/com/scwang/wave/IntRange.java b/library/src/main/java/com/scwang/wave/IntRange.java
index 208ef813e32e023e17b7070a69d32c641bcc86fb..bad8f0bb86dee045234707fb35073d78fc236737 100644
--- a/library/src/main/java/com/scwang/wave/IntRange.java
+++ b/library/src/main/java/com/scwang/wave/IntRange.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
 package com.scwang.wave;
 
 import java.lang.annotation.ElementType;