Size of Serliazed objects

Question

Hi,
Is there anyway to measure the size of the Serliazed objects (in bytes) used in RMI?
Any help is appriciated.
Many thanks in advance

Answer 1

Not through RMI but you can measure the seze of an object using a simple trick like this.
class FakeOutputStream extends OutputStream{
   long count = 0;
   public void close() throws IOException{
      //does nothing;
   public void flush() throws IOException{
      //does nothing;
   // write method keeps a count of the invocations
   public synchronized void write(int b){     
      count++;
   public synchronized long getCount(){
      return count;
class SerializableClass implements java.io.Serializable{
    //Blah
    //Blah
//You main will look like this
FakeOutputStream  fake = new FakeOutputStream ();
ObjectOutputStream oos = new ObjectOutputStream (fake);
oos.flush();
//Since the object streams dump some header data to stream you will need to
//get that length and substract it from the final length
long oldCount = fake.getCount();
//Write the object
oos.writeObject(new SerializableClass());
oos.flush();
oos.close();
//Print the size
System.out.println(fake.getCount() - oldCount);