Hi,

I'm unable to reproduce ur problem. Things work fine for me .... Where
are you reading the object back? Is it in the same method or in a
different method?

FYI, here is the code that I have written:

package com.trilogy.temp;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.nio.ByteBuffer;

class MyEvent implements Serializable {

   private long   long1;

   private final String string1;

   public MyEvent( String stringArg , long longArg ) {
      long1 = longArg;
      string1=stringArg;
   }

   public String toString() {
       return("MyEvent[string1=" + string1 + ", long1=" + long1 +
"]");
   }

}

public class TestSerialization {

   public void testSerialize() throws IOException,
ClassNotFoundException {

       MyEvent event = new MyEvent("test", 123);

       ByteArrayOutputStream baos = new ByteArrayOutputStream();
       ObjectOutputStream oos = new ObjectOutputStream(baos);

       oos.writeObject(event);

       ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray());

       ByteArrayInputStream bais = new
ByteArrayInputStream(buffer.array());
       ObjectInputStream ois = new ObjectInputStream(bais);

       MyEvent eventRead = ((MyEvent)ois.readObject());

       System.out.println("eventRead = " + eventRead);

   }

   /**
    * @param args
    */
   public static void main(String[] args) {

       try {
           (new TestSerialization()).testSerialize();
       } catch(Exception e) {
           System.err.println("Got exception: " + e.getMessage());
           e.printStackTrace();
       }

   }

}

The output I get is:

eventRead = MyEvent[string1=test, long1=123]

This shows the reading and writing of only one instance.  Can you show us an
exmaple that doesn more than one and demonstrates the every-other-time
behavior?