Serializing in-memory class

Dear all,
Given that I have a user defined class loaded in the VM. If I no longer have access to the .java or .class files, how can I get a serialised version of the class?
I am doing the following:
Class clazz = MyClass.class;
File file = new File("c:\\MyClass.class");
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(file));
oos.writeObject(clazz);
oos.flush();
oos.close();
But when I try to execute the resulting MyClass.class file, I get a bad magic number exception. I think this has something to do with the class checksum value at the start of a valid class file. I am using j2sdk v1.4.
What is the best approach to writing the in-memory class to a file, or better still, to a byte array?
Thanks
Raj

I'm guessing you can't, but if you could it probably would be
ClassLoader.getResourceAsStream()

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