Index: deployment/dol/src/main/java/com/sun/enterprise/deployment/annotation/impl/ModuleScanner.java
===================================================================
--- deployment/dol/src/main/java/com/sun/enterprise/deployment/annotation/impl/ModuleScanner.java	(revision 24039)
+++ deployment/dol/src/main/java/com/sun/enterprise/deployment/annotation/impl/ModuleScanner.java	(working copy)
@@ -97,24 +97,30 @@
      */
     protected void addScanJar(File jarFile) throws IOException {
         JarFile jf = new JarFile(jarFile);
-        
 
-        Enumeration<JarEntry> entriesEnum = jf.entries();
-        while(entriesEnum.hasMoreElements()) {
-            JarEntry je = entriesEnum.nextElement();
-            if (je.getName().endsWith(".class")) {
-                if (processAllClasses) {
-                    addEntry(je);
-                } else {
-                    // check if it contains top level annotations...
-                    ReadableByteChannel channel = Channels.newChannel(jf.getInputStream(je));
-                    if (channel!=null) {
-                        if (classFile.containsAnnotation(channel, je.getSize())) {
-                            addEntry(je);                     
+        try {
+
+            Enumeration<JarEntry> entriesEnum = jf.entries();
+            while (entriesEnum.hasMoreElements()) {
+                JarEntry je = entriesEnum.nextElement();
+                if (je.getName().endsWith(".class")) {
+                    if (processAllClasses) {
+                        addEntry(je);
+                    } else {
+                        // check if it contains top level annotations...
+                        ReadableByteChannel channel = Channels.newChannel(jf
+                                .getInputStream(je));
+                        if (channel != null) {
+                            if (classFile.containsAnnotation(channel, je
+                                    .getSize())) {
+                                addEntry(je);
+                            }
                         }
                     }
                 }
             }
+        } finally {
+            jf.close();
         }
     }