how to use ByteArrayOutputStream and DataOutputStream simultaneously (Java)

Question

I\'m having quite a problem here, and I think it is because I don\'t understand very much how I should use the API provided by Java.

I need to write an int

Answer 1

You don´t need more like this

Example exampleExample = method(example); 
ByteArrayOutputStream baos = new ByteArrayOutputStream(); marshaller.marshal(exampleExample , baos);
Message message = MessageBuilder.withBody(baos.toByteArray()).build();