diff -r 42c2ceb1e160 -r a6a23aa7a546 emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js
--- a/emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js	Tue Dec 04 12:06:27 2012 +0100
+++ b/emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js	Thu Dec 06 16:11:48 2012 +0100
@@ -1,2 +1,9 @@
 // initialize methods on String constants
 java_lang_String(false);
+
+// we need initialized arrays
+Array.prototype.fillNulls = function() {
+  for(var i = 0; i < this.length; i++) this[i] = null;
+  return this;
+};
+