Use isEmpty().
diff --git a/web/src/main/java/org/apache/commons/chain2/web/ChainResources.java b/web/src/main/java/org/apache/commons/chain2/web/ChainResources.java
index 18bb2a7..24012a0 100644
--- a/web/src/main/java/org/apache/commons/chain2/web/ChainResources.java
+++ b/web/src/main/java/org/apache/commons/chain2/web/ChainResources.java
@@ -135,7 +135,7 @@
      * @since Chain 1.1
      */
     static String[] getResourcePaths(String resources) {
-        if (resources == null || resources.length() == 0) {
+        if (resources == null || resources.isEmpty()) {
             return new String[0];
         }