"ByVal" feature for Object parameters in 1.5?

Is there a new feature in J2SE 1.5 that offers "ByVal" method parameters? E.g. if i call a method and set an object as a parameter, the method is able to change this object ('s values). The (rather bad) workaround is to first create a (deep) copy of the object to pass as the parameter (e.g. via clone()). But it would be more suitable to define this in the method declaration.

Is there a new feature in J2SE 1.5 that offers "ByVal" method parameters?Method parameters are always ByVal. The value of a type variable in Java is a reference to an object.
It does not make sense to implement deep-copies at the language level (consider signgletons, identity-based hashcodes, objects that hold references to exclusive system resources, etc).

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             I'm using a multimapping inside BPM mapping 2 messages into one message and it fails for some reason but when I try to have a look at the BPM workflow, I cannot see the 'PAYLOAD' in the MESSAGES_IN and MESSAGES_OUT properties of the container. However the HEADER of the incoming message and outgoing message is visible.When I try to see the payload it says 'No persistent reference could be generated for object 'PAYLOAD''.
    The mapping gets executed without any issues via BPM or when we test it manually in interface mapping.This is the case with all other BPM's too so it more looks like some property which has to be set in PI to make the payload visible.
    Thanks & Regards,
    Harish.

    Guys,
    Can somebody help me ?
    The main reason behind why I am trying to see the payload inside BPM is
    that I am using a multimapping where I send two requests (input 1:one
    with parameters/values to be replaced and second one(input2) has the
    actual payload where replacement should happen) and output should be
    the second message with values replaced.I am using a java mapping and
    when I test it standalone it works whereas inside the BPM I get the
    output same as the input2 i.e the replacement doesn't happen.
    I am trying to see how the BPM is merging the two inputs to the
    multimap which is stopping the java map to work as expected.
    I guess something is wrong with the namepsaces as the input2 is the result of a webservice call and carries namespaces like pns, rpl etc.

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