--- a/nashorn/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js	Thu Oct 10 11:48:56 2013 +0200
+++ b/nashorn/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js	Thu Oct 10 13:17:57 2013 +0200
@@ -41,7 +41,12 @@
     }
 });
 
+
 // importPackage
+// avoid unnecessary chaining of __noSuchProperty__ again
+// in case user loads this script more than once.
+if (typeof importPackage == 'undefined') {
+
 Object.defineProperty(this, "importPackage", {
     configurable: true, enumerable: false, writable: true,
     value: (function() {
@@ -91,6 +96,8 @@
     })()
 });
 
+}
+
 // Object.prototype.__defineGetter__
 Object.defineProperty(Object.prototype, "__defineGetter__", {
     configurable: true, enumerable: false, writable: true,
@@ -344,13 +351,16 @@
 // Rhino: global.importClass
 Object.defineProperty(this, "importClass", {
     configurable: true, enumerable: false, writable: true,
-    value: function(clazz) {
-        if (Java.isType(clazz)) {
-            var className = Java.typeName(clazz);
-            var simpleName = className.substring(className.lastIndexOf('.') + 1);
-            this[simpleName] = clazz;
-        } else {
-            throw new TypeError(clazz + " is not a Java class");
+    value: function() {
+        for (var arg in arguments) {
+            var clazz = arguments[arg];
+            if (Java.isType(clazz)) {
+                var className = Java.typeName(clazz);
+                var simpleName = className.substring(className.lastIndexOf('.') + 1);
+                this[simpleName] = clazz;
+            } else {
+                throw new TypeError(clazz + " is not a Java class");
+            }
         }
     }
 });

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8026248.js	Thu Oct 10 13:17:57 2013 +0200
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026248: importClass has to be a varargs function
+ *
+ * @test
+ * @run
+ */
+
+load('nashorn:mozilla_compat.js')
+
+importClass(java.io.File, java.io.InputStream) 
+
+print(File)
+print(InputStream)
+
+importClass(java.util.Map, java.util.HashMap, java.io.PrintStream)
+
+print(HashMap)
+print(Map)
+print(PrintStream)
+
+importClass.call(this, java.util.Collections, java.util.List);
+print(Collections)
+print(List)
+
+importClass.apply(this, [ java.util.Queue, java.math.BigInteger, java.math.BigDecimal ]);
+print(Queue)
+print(BigInteger)
+print(BigDecimal)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8026248.js.EXPECTED	Thu Oct 10 13:17:57 2013 +0200
@@ -0,0 +1,10 @@
+[JavaClass java.io.File]
+[JavaClass java.io.InputStream]
+[JavaClass java.util.HashMap]
+[JavaClass java.util.Map]
+[JavaClass java.io.PrintStream]
+[JavaClass java.util.Collections]
+[JavaClass java.util.List]
+[JavaClass java.util.Queue]
+[JavaClass java.math.BigInteger]
+[JavaClass java.math.BigDecimal]