api: Java style fixes.

https://codereview.appspot.com/113910043/

Author: wonderfly

google-api-client-appengine/src/main/java/com/google/api/client/googleapis/extensions/appengine/testing/auth/oauth2/MockAppIdentityService.java

@@ -14,10 +14,10 @@
 
 package com.google.api.client.googleapis.extensions.appengine.testing.auth.oauth2;
 
+import com.google.api.client.util.Beta;
 import com.google.appengine.api.appidentity.AppIdentityService;
 import com.google.appengine.api.appidentity.AppIdentityServiceFailureException;
 import com.google.appengine.api.appidentity.PublicCertificate;
-import com.google.api.client.util.Beta;
 
 import java.util.Collection;
 

google-api-client/src/main/java/com/google/api/client/googleapis/testing/json/GoogleJsonResponseExceptionFactoryTesting.java

@@ -26,7 +26,7 @@
 import java.io.IOException;
 
 /**
- * {@link Beta} </br>
+ * {@link Beta} <br/>
  * Factory class that builds {@link GoogleJsonResponseException} instances for
  * testing.
  *

google-api-client/src/main/java/com/google/api/client/googleapis/util/Utils.java

@@ -16,8 +16,8 @@
 
 import com.google.api.client.http.HttpTransport;
 import com.google.api.client.http.javanet.NetHttpTransport;
-import com.google.api.client.json.jackson2.JacksonFactory;
 import com.google.api.client.json.JsonFactory;
+import com.google.api.client.json.jackson2.JacksonFactory;
 import com.google.api.client.util.Beta;
 
 /**