diff -r 2e2e6f946208 -r 1848c77df886 emul/src/main/java/java/lang/Class.java
--- a/emul/src/main/java/java/lang/Class.java	Wed Dec 05 10:03:58 2012 +0100
+++ b/emul/src/main/java/java/lang/Class.java	Sat Dec 15 07:10:58 2012 +0100
@@ -144,8 +144,18 @@
      */
     public static Class<?> forName(String className)
                 throws ClassNotFoundException {
-        throw new UnsupportedOperationException();
+        Class<?> c = loadCls(className.replace('.', '_'));
+        if (c == null) {
+            throw new ClassNotFoundException();
+        }
+        return c;
     }
+    
+    @JavaScriptBody(args = "c", body =
+        "if (vm[c]) return vm[c].$class;"
+      + "else return null;"
+    )
+    private static native Class<?> loadCls(String c);
 
 
     /**