diff --git a/src/main/java/cn/jpush/api/JPushClient.java b/src/main/java/cn/jpush/api/JPushClient.java
index 48880620..69d97ede 100644
--- a/src/main/java/cn/jpush/api/JPushClient.java
+++ b/src/main/java/cn/jpush/api/JPushClient.java
@@ -593,10 +593,7 @@ public PushResult sendIosNotificationWithRegistrationID(JsonObject alert, SMS sm
 
     
     // ---------------------- shortcuts - message
-    
-    /**
-     * Shortcut
-     */
+
     public PushResult sendMessageAll(String msgContent) throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.messageAll(msgContent);
         return _pushClient.sendPush(payload);
@@ -616,10 +613,7 @@ public PushResult sendMessageAll(String msgContent, SMS sms) throws APIConnectio
         PushPayload payload = PushPayload.messageAll(msgContent, sms);
         return _pushClient.sendPush(payload);
     }
-    
-    /**
-     * Shortcut
-     */
+
     public PushResult sendAndroidMessageWithAlias(String title, String msgContent, String... alias) 
             throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.newBuilder()
@@ -658,10 +652,7 @@ public PushResult sendAndroidMessageWithAlias(String title, String msgContent, S
                 .build();
         return _pushClient.sendPush(payload);
     }
-    
-    /**
-     * Shortcut
-     */
+
     public PushResult sendAndroidMessageWithRegistrationID(String title, String msgContent, String... registrationID) 
             throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.newBuilder()
@@ -700,10 +691,7 @@ public PushResult sendAndroidMessageWithRegistrationID(String title, String msgC
                 .build();
         return _pushClient.sendPush(payload);
     }
-    
-    /**
-     * Shortcut
-     */
+
     public PushResult sendIosMessageWithAlias(String title, String msgContent, String... alias) 
             throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.newBuilder()
@@ -742,7 +730,7 @@ public PushResult sendIosMessageWithAlias(String title, String msgContent, SMS s
                 .build();
         return _pushClient.sendPush(payload);
     }
-    
+
     public PushResult sendIosMessageWithRegistrationID(String title, String msgContent, String... registrationID) 
             throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.newBuilder()
@@ -782,9 +770,6 @@ public PushResult sendIosMessageWithRegistrationID(String title, String msgConte
         return _pushClient.sendPush(payload);
     }
 
-    /**
-     * Shortcut
-     */
     public PushResult sendMessageWithRegistrationID(String title, String msgContent, String... registrationID) 
             throws APIConnectionException, APIRequestException {
         PushPayload payload = PushPayload.newBuilder()
diff --git a/src/main/java/cn/jpush/api/push/model/PushPayload.java b/src/main/java/cn/jpush/api/push/model/PushPayload.java
index 33b18dec..c8d66c4f 100644
--- a/src/main/java/cn/jpush/api/push/model/PushPayload.java
+++ b/src/main/java/cn/jpush/api/push/model/PushPayload.java
@@ -51,9 +51,10 @@ private PushPayload(Platform platform, Audience audience,
         this.options = options;
         this.sms = sms;
     }
-    
+
     /**
      * The entrance for building a PushPayload object.
+     * @return PushPayload builder
      */
     public static Builder newBuilder() {
         return new Builder();
@@ -61,6 +62,8 @@ public static Builder newBuilder() {
     
     /**
      * The shortcut of building a simple alert notification object to all platforms and all audiences
+     * @param alert The alert message.
+     * @return PushPayload
      */
     public static PushPayload alertAll(String alert) {
         return new Builder()
@@ -80,6 +83,8 @@ public static PushPayload alertAll(String alert, SMS sms) {
     
     /**
      * The shortcut of building a simple message object to all platforms and all audiences
+     * @param msgContent The message content.
+     * @return PushPayload
      */
     public static PushPayload messageAll(String msgContent) {
         return new Builder()
diff --git a/src/main/java/cn/jpush/api/push/model/SMS.java b/src/main/java/cn/jpush/api/push/model/SMS.java
index dac446e5..db7efedb 100644
--- a/src/main/java/cn/jpush/api/push/model/SMS.java
+++ b/src/main/java/cn/jpush/api/push/model/SMS.java
@@ -27,7 +27,7 @@ public static Builder newBuilder() {
      *
      * @param content The SMS content.
      * @param delayTime The seconds you want to delay, should be greater than or equal to 0.
-     * @return
+     * @return SMS payload.
      */
     public static SMS content(String content, int delayTime) {
         return new Builder()
diff --git a/src/main/java/cn/jpush/api/push/model/notification/IosNotification.java b/src/main/java/cn/jpush/api/push/model/notification/IosNotification.java
index 92af6169..3d2f5302 100644
--- a/src/main/java/cn/jpush/api/push/model/notification/IosNotification.java
+++ b/src/main/java/cn/jpush/api/push/model/notification/IosNotification.java
@@ -11,16 +11,20 @@
  * APNs 通知类
  * <p>
  * 支持 APNs 默认的几个参数：
+ * <ul>
  * <li>alert: 继承自父类 PlatformNotification 的 alert 属性；本类设置则覆盖。</li>
  * <li>badge: 支持 setBadge(int) 方法来设置；支持 incrBadge(int) 方法来增加。</li>
  * <li>sound: 支持 setSound(string) 方法来设置声音文件。</li>
  * <li>content-available: 用来支持后台推送。如果该值赋值为 1，表示开启后台推送。</li>
  * <li>extras: JSON object. 支持更多的自定义字段信息。</li>
+ * </ul>
  * </p>
  * <p>
  * 需要特别留意的是，JPush SDK 会对以下几个值有特别的默认设置考虑：
+ * <ul>
  * <li>badge: 默认为 "+1"。如果需要取消 badge 值，需要显式地调用 disableBadge().</li>
  * <li>sound: 默认为 ""，即默认的声音提示。如果需要取消 sound 值，即不要声音，需要显式地调用 disableSound(). </li>
+ * </ul>
  * </p>
  */
 public class IosNotification extends PlatformNotification {
@@ -152,6 +156,7 @@ public Builder setBadge(int badge) {
         
         /**
          * equals to: +1
+         * @return IosNotification builder
          */
         public Builder autoBadge() {
             return incrBadge(1);
diff --git a/src/main/java/cn/jpush/api/push/model/notification/Notification.java b/src/main/java/cn/jpush/api/push/model/notification/Notification.java
index 4134a7ac..0ecddb69 100644
--- a/src/main/java/cn/jpush/api/push/model/notification/Notification.java
+++ b/src/main/java/cn/jpush/api/push/model/notification/Notification.java
@@ -33,10 +33,7 @@ public static Builder newBuilder() {
     public static Notification alert(Object alert) {
         return newBuilder().setAlert(alert).build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification android(String alert, String title, Map<String, String> extras) {
         return newBuilder()
                 .addPlatformNotification(AndroidNotification.newBuilder()
@@ -46,10 +43,7 @@ public static Notification android(String alert, String title, Map<String, Strin
                     .build())
                 .build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification ios(Object alert, Map<String, String> extras) {
         return newBuilder()
                 .addPlatformNotification(IosNotification.newBuilder()
@@ -58,10 +52,7 @@ public static Notification ios(Object alert, Map<String, String> extras) {
                     .build())
                 .build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification ios_auto_badge() {
         return newBuilder()
                 .addPlatformNotification(IosNotification.newBuilder()
@@ -70,10 +61,7 @@ public static Notification ios_auto_badge() {
                     .build())
                 .build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification ios_set_badge(int badge) {
         return newBuilder()
                 .addPlatformNotification(IosNotification.newBuilder()
@@ -82,10 +70,7 @@ public static Notification ios_set_badge(int badge) {
                     .build())
                 .build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification ios_incr_badge(int badge) {
         return newBuilder()
                 .addPlatformNotification(IosNotification.newBuilder()
@@ -94,10 +79,7 @@ public static Notification ios_incr_badge(int badge) {
                     .build())
                 .build();
     }
-    
-    /**
-     * shortcut
-     */
+
     public static Notification winphone(String alert, Map<String, String> extras) {
         return newBuilder()
                 .addPlatformNotification(WinphoneNotification.newBuilder()