1 files changed, 4 insertions, 2 deletions
diff --git a/juick-server/src/main/java/com/juick/server/protocol/annotation/UserCommand.java b/juick-server/src/main/java/com/juick/server/protocol/annotation/UserCommand.java
index af7c4924..42a9bb59 100644
--- a/juick-server/src/main/java/com/juick/server/protocol/annotation/UserCommand.java
+++ b/juick-server/src/main/java/com/juick/server/protocol/annotation/UserCommand.java
@@ -1,5 +1,7 @@
 package com.juick.server.protocol.annotation;
 
+import org.apache.commons.lang3.StringUtils;
+
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -15,7 +17,7 @@ public @interface UserCommand {
      *
      * @return a command pattern
      */
-    String pattern() default "";
+    String pattern() default StringUtils.EMPTY;
 
     /**
      *
@@ -27,5 +29,5 @@ public @interface UserCommand {
      *
      * @return a string used in HELP command output. Basically, only 1 string
      */
-    String help() default "";
+    String help() default StringUtils.EMPTY;
 }