diff --git a/entry/src/main/java/com/yuyh/bankcardformat/MainAbility.java b/entry/src/main/java/com/yuyh/bankcardformat/MainAbility.java
index ef2c6a08152e5c4b39651ed6fc22d9d7acb606eb..33176d298369890b12176df36ed1241207aa24d8 100644
--- a/entry/src/main/java/com/yuyh/bankcardformat/MainAbility.java
+++ b/entry/src/main/java/com/yuyh/bankcardformat/MainAbility.java
@@ -1,3 +1,17 @@
+/*
+ * 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 an 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.yuyh.bankcardformat;
 
@@ -5,6 +19,12 @@ import com.yuyh.bankcardformat.slice.MainAbilitySlice;
 import ohos.aafwk.ability.Ability;
 import ohos.aafwk.content.Intent;
 
+/**
+ * MainAbility
+ *
+ * @author ljx
+ * @since 2021-05-08
+ */
 public class MainAbility extends Ability {
 
     @Override
diff --git a/entry/src/main/java/com/yuyh/bankcardformat/MyApplication.java b/entry/src/main/java/com/yuyh/bankcardformat/MyApplication.java
index a16dd397d28dbaeb2caf5b82b743437708bf15b6..a6a02e81c8ed5e5654318bebeca32a59ac12dd12 100644
--- a/entry/src/main/java/com/yuyh/bankcardformat/MyApplication.java
+++ b/entry/src/main/java/com/yuyh/bankcardformat/MyApplication.java
@@ -1,8 +1,28 @@
+/*
+ * 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 an 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.yuyh.bankcardformat;
 
 import ohos.aafwk.ability.AbilityPackage;
 
+/**
+ * MyApplication
+ *
+ * @author ljx
+ * @since 2021-05-08
+ */
 public class MyApplication extends AbilityPackage {
     @Override
     public void onInitialize() {
diff --git a/entry/src/main/java/com/yuyh/bankcardformat/slice/MainAbilitySlice.java b/entry/src/main/java/com/yuyh/bankcardformat/slice/MainAbilitySlice.java
index 8ddc24cd1bd79966c07c77e86889d0e73090d893..cfbac570fe80eb87fb20d1d3efef2f4c4856f35e 100644
--- a/entry/src/main/java/com/yuyh/bankcardformat/slice/MainAbilitySlice.java
+++ b/entry/src/main/java/com/yuyh/bankcardformat/slice/MainAbilitySlice.java
@@ -1,3 +1,17 @@
+/*
+ * 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 an 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.yuyh.bankcardformat.slice;
 
@@ -8,6 +22,12 @@ import ohos.aafwk.ability.AbilitySlice;
 import ohos.aafwk.content.Intent;
 import ohos.agp.components.Text;
 
+/**
+ * MainAbilitySlice
+ *
+ * @author ljx
+ * @since 2021-05-08
+ */
 public class MainAbilitySlice extends AbilitySlice {
 
     private BandCardEditText editText;
diff --git a/entry/src/ohosTest/java/com/yuyh/bankcardformat/ExampleOhosTest.java b/entry/src/ohosTest/java/com/yuyh/bankcardformat/ExampleOhosTest.java
index 21c0b90bbcd3d2b0b802956c7c970845080cd64d..8ce576d7622ceb7808cebddf5691cb8b030e76c6 100644
--- a/entry/src/ohosTest/java/com/yuyh/bankcardformat/ExampleOhosTest.java
+++ b/entry/src/ohosTest/java/com/yuyh/bankcardformat/ExampleOhosTest.java
@@ -18,7 +18,6 @@ package com.yuyh.bankcardformat;
 import ohos.aafwk.ability.delegation.AbilityDelegatorRegistry;
 import org.junit.Test;
 
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 import static org.junit.Assert.assertEquals;