Fix checkstyle warnings.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1455827 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/fileupload/servlet/ServletFileUpload.java b/src/main/java/org/apache/commons/fileupload/servlet/ServletFileUpload.java
index 829b581..8216bb0 100644
--- a/src/main/java/org/apache/commons/fileupload/servlet/ServletFileUpload.java
+++ b/src/main/java/org/apache/commons/fileupload/servlet/ServletFileUpload.java
@@ -46,6 +46,7 @@
  */
 public class ServletFileUpload extends FileUpload {
 
+    /** Constant for HTTP POST method. */
     private static final String POST_METHOD = "post";
 
     // ---------------------------------------------------------- Class methods