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Mock objects library for java

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package org.objenesis.instantiator;

import java.io.Serializable;

/**
 * Helper for common serialization-compatible instantiation functions
 * 
 * @author Leonardo Mesquita
 */
public class SerializationInstantiatorHelper {

   /**
    * Returns the first non-serializable superclass of a given class. According to Java Object
    * Serialization Specification, objects read from a stream are initialized by calling an
    * accessible no-arg constructor from the first non-serializable superclass in the object's
    * hierarchy, allowing the state of non-serializable fields to be correctly initialized.
    * 
    * @param type Serializable class for which the first non-serializable superclass is to be found
    * @return The first non-serializable superclass of 'type'.
    * @see java.io.Serializable
    */
   public static Class getNonSerializableSuperClass(Class type) {
      Class result = type;
      while(Serializable.class.isAssignableFrom(result)) {
         result = result.getSuperclass();
         if(result == null) {
            throw new Error("Bad class hierarchy: No non-serializable parents");
         }
      }
      return result;

   }
}