Deserialize Object Invalid Class Exception

Question

I receive the followign error when attempting to deserialize an Integer class:
java.lang.Integer; Local class not compatible: stream classdesc serialVersionUID=1360826667802527544 local class serialVersionUID=1360826667806852920
java.io.InvalidClassException: java.lang.Integer; Local class not compatible: stream classdesc serialVersionUID=1360826667802527544 local class serialVersionUID=1360826667806852920
     at java.io.ObjectStreamClass.validateLocalClass(ObjectStreamClass.java:560)
     at java.io.ObjectStreamClass.setClass(ObjectStreamClass.java:604)
     at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:981)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:402)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:272)
     at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1231)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:272)
     at nyerges.matt.Serialization.DeserializeObjectFromString(Serialization.java:50)
     at nyerges.matt.TestSerialization.main(TestSerialization.java:35)
Here is my main class and method:
package nyerges.matt;
* @author n0139292
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
public class TestSerialization {
     public static void main(String[] args) {
          Integer i = new Integer(10);
          System.out.println(i);
          String res = Serialization.SerializeObjectToString(i);
          Integer q = (Integer) Serialization.DeserializeObjectFromString(res);
          System.out.println(q);
}Here is the code for the serialization class:
package nyerges.matt;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
* @author n0139292
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
public class Serialization {
     public static String SerializeObjectToString(Object o)
          try{
               ByteArrayOutputStream baos = new ByteArrayOutputStream();
               ObjectOutputStream oos = new ObjectOutputStream(baos);
               oos.writeObject(o);
               oos.flush();
               oos.close();
               String toSend = new String(baos.toByteArray());
               return toSend;
          }catch(Exception e){
               System.out.println(e.getMessage());
               e.printStackTrace();
          return null;
     public static Object DeserializeObjectFromString(String s)
          try
               byte[] bs = s.getBytes();
               ByteArrayInputStream bais = new ByteArrayInputStream(bs);
               ObjectInputStream ois = new ObjectInputStream(bais);
               Object toGet = (Object) ois.readObject();
               ois.close();
               return toGet;
          }catch(Exception e)
               System.out.println(e.getMessage());
               e.printStackTrace();
          return null;
}This does not deal with RMI or Marshalling problems, since I am doing it on the same computer within seconds of each other. This was developed and ran with WebSphere if that helps.
Thanks in advance,
Matt

Answer 1

Check this out for a discussion on this:
http://forum.java.sun.com/thread.jspa?threadID=479051&messageID=2228486
Oh, as an aside and you might also want to take a look here, for method names:
http://java.sun.com/docs/codeconv/