--- a/langtools/src/share/classes/com/sun/tools/doclets/formats/html/ConfigurationImpl.java	Fri Apr 18 08:35:59 2014 -0700
+++ b/langtools/src/share/classes/com/sun/tools/doclets/formats/html/ConfigurationImpl.java	Fri Apr 18 08:44:53 2014 -0700
@@ -495,15 +495,15 @@
         if (createoverview) {
             topFile = DocPaths.OVERVIEW_SUMMARY;
         } else {
-            if (packages.length == 1 && packages[0].name().equals("")) {
+            if (packages.size() == 1 && packages.first().name().equals("")) {
                 if (root.classes().length > 0) {
                     ClassDoc[] classarr = root.classes();
                     Arrays.sort(classarr);
                     ClassDoc cd = getValidClass(classarr);
                     topFile = DocPath.forClass(cd);
                 }
-            } else {
-                topFile = DocPath.forPackage(packages[0]).resolve(DocPaths.PACKAGE_SUMMARY);
+            } else if (!packages.isEmpty()) {
+                topFile = DocPath.forPackage(packages.first()).resolve(DocPaths.PACKAGE_SUMMARY);
             }
         }
     }
@@ -534,7 +534,7 @@
      * packages is more than one. Sets {@link #createoverview} field to true.
      */
     protected void setCreateOverview() {
-        if ((overview || packages.length > 1) && !nooverview) {
+        if ((overview || packages.size() > 1) && !nooverview) {
             createoverview = true;
         }
     }