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Asked: 2026-05-22T23:43:41+00:00

You might be thinking why would you want to have an object both Remote

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You might be thinking why would you want to have an object both Remote AND serializeable. Well let me give you some context.

I’m building an air traffic control system (school project), it’s distributed so that each control zone runs on it’s own server and communicates with other control zones. Each control zone keeps track of its own aiplanes.

When an airplane (flying in controlzone A) is 100km near its border, it is passed as a remote object to the controlzone (controlzone B) it’s near to. This way controlzone B can see where the aiplane is (by periodical asking its position) while it’s still controlled by controlzone A.

But when an airplane crosses the border between controlzone A and B, controlzone B should keep track of the airplane instead of controlzone A. So we we want to serialize the airplane and pass it to controlZone B. This is where our problem lies.

Can I make the airplane remote AND serializeable?

EDIT: Also, I could use remote methods to copy the needed fields for the airplane, but I prefer serializing it.

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1 Answer

  1. Editorial Team

    If a remote object isn’t exported at the time it is sent as a remote method parameter or result, it is serialized instead of being passed as a remote reference, provided that it implements Serializable as well as Remote. It is then exported at the receiver. UnicastRemoteObject does this for example, and therefore so does any remote object derived from it. This can be used for mobile remote agents.

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