diff -r 6ab756741111 -r 3471d74a6b99 rt/emul/mini/src/main/java/java/lang/reflect/Method.java
--- a/rt/emul/mini/src/main/java/java/lang/reflect/Method.java	Mon Feb 17 16:55:44 2014 +0100
+++ b/rt/emul/mini/src/main/java/java/lang/reflect/Method.java	Wed May 07 08:49:54 2014 +0200
@@ -552,28 +552,28 @@
     }
 
     static Object fromPrimitive(Class<?> type, Object o) {
-        if (type == Integer.TYPE) {
+        if (samePrimitive(type, Integer.TYPE)) {
             return fromRaw(Integer.class, "valueOf__Ljava_lang_Integer_2I", o);
         }
-        if (type == Long.TYPE) {
+        if (samePrimitive(type, Long.TYPE)) {
             return fromRaw(Long.class, "valueOf__Ljava_lang_Long_2J", o);
         }
-        if (type == Double.TYPE) {
+        if (samePrimitive(type, Double.TYPE)) {
             return fromRaw(Double.class, "valueOf__Ljava_lang_Double_2D", o);
         }
-        if (type == Float.TYPE) {
+        if (samePrimitive(type, Float.TYPE)) {
             return fromRaw(Float.class, "valueOf__Ljava_lang_Float_2F", o);
         }
-        if (type == Byte.TYPE) {
+        if (samePrimitive(type, Byte.TYPE)) {
             return fromRaw(Byte.class, "valueOf__Ljava_lang_Byte_2B", o);
         }
-        if (type == Boolean.TYPE) {
+        if (samePrimitive(type, Boolean.TYPE)) {
             return fromRaw(Boolean.class, "valueOf__Ljava_lang_Boolean_2Z", o);
         }
-        if (type == Short.TYPE) {
+        if (samePrimitive(type, Short.TYPE)) {
             return fromRaw(Short.class, "valueOf__Ljava_lang_Short_2S", o);
         }
-        if (type == Character.TYPE) {
+        if (samePrimitive(type, Character.TYPE)) {
             return fromRaw(Character.class, "valueOf__Ljava_lang_Character_2C", o);
         }
         if (type.getName().equals("void")) {
@@ -581,6 +581,46 @@
         }
         throw new IllegalStateException("Can't convert " + o);
     }
+    static boolean samePrimitive(Class<?> c1, Class<?> c2) {
+        if (c1 == c2) {
+            return true;
+        }
+        if (c1.isPrimitive()) {
+            return c1.getName().equals(c2.getName());
+        }
+        return false;
+    }
+
+    static String findArraySignature(Class<?> type) {
+        if (!type.isPrimitive()) {
+            return "[L" + type.getName().replace('.', '/') + ";";
+        }
+        if (samePrimitive(type, Integer.TYPE)) {
+            return "[I";
+        }
+        if (samePrimitive(type, Long.TYPE)) {
+            return "[J";
+        }
+        if (samePrimitive(type, Double.TYPE)) {
+            return "[D";
+        }
+        if (samePrimitive(type, Float.TYPE)) {
+            return "[F";
+        }
+        if (samePrimitive(type, Byte.TYPE)) {
+            return "[B";
+        }
+        if (samePrimitive(type, Boolean.TYPE)) {
+            return "[Z";
+        }
+        if (samePrimitive(type, Short.TYPE)) {
+            return "[S";
+        }
+        if (samePrimitive(type, Character.TYPE)) {
+            return "[C";
+        }
+        throw new IllegalStateException("Can't create array for " + type);
+    }
     
     @JavaScriptBody(args = { "cls", "m", "o" }, 
         body = "return cls.cnstr(false)[m](o);"