ciaop raga, dopo aver eseguito questo codice

codice:
    try {
      FileSeekableStream stream = new FileSeekableStream(nome);
      RenderedOp img = JAI.create("stream", stream);
      return img;
    }
    catch (IOException e) {
      throw new MEDExceptions(MEDExceptions.IO_IMAGE_ERROR);
    }
metto la variavile img come attributo all'ìnterno di un altro oggetto Paziente, il quale a sua volta implements Serializable, dopodiché invio l'oggetto da un'applicazione server ad una client, con l'istruzione:

codice:
   packetOut.writeObject(paziente);
Il problema è che quando viene eseguita tale istruzione, viene generata l'eccezione:

codice:
java.lang.RuntimeException: com.sun.media.jai.codec.FileSeekableStreamNon-serializable parameter in this operation`s ParameterBlock.

at javax.media.jai.OperationNodeSupport.writeObject(OperationNodeSupport.java:754)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:367)
at javax.media.jai.RenderedOp.writeObject(RenderedOp.java:3015)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1224)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1050)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:367)
at java.util.Vector.writeObject(Vector.java:1017)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at ClientServer.GestoreRichiesta.processaRichiesta(GestoreRichiesta.java:60)
at ClientServer.GestoreRichiesta.run(GestoreRichiesta.java:116)
Qual'è il problema?