diff --git a/java/src/org/apache/env/Which.java b/java/src/org/apache/env/Which.java
index 06e7781..a14f243 100644
--- a/java/src/org/apache/env/Which.java
+++ b/java/src/org/apache/env/Which.java
@@ -316,12 +316,12 @@ public class Which
         if (null == hash)
             return;
 
-        Enumeration enum = hash.keys();
+        Enumeration keysEnum = hash.keys();
         Vector v = new Vector();
 
-        while (enum.hasMoreElements())
+        while (keysEnum.hasMoreElements())
         {
-            Object key = enum.nextElement();
+            Object key = keysEnum.nextElement();
             String keyStr = key.toString();
             Object item = hash.get(key);
 
@@ -338,12 +338,12 @@ public class Which
             }
         }
 
-        enum = v.elements();
+        keysEnum = v.elements();
 
-        while (enum.hasMoreElements())
+        while (keysEnum.hasMoreElements())
         {
-            String n = (String) enum.nextElement();
-            Hashtable h = (Hashtable) enum.nextElement();
+            String n = (String) keysEnum.nextElement();
+            Hashtable h = (Hashtable) keysEnum.nextElement();
 
             reportHashtable(h, n, out);
         }