package drills.drill01.exercise1

import java.rmi.Remote
import java.rmi.RemoteException
import java.rmi.server.UnicastRemoteObject

interface Adder : Remote {
    @Throws(RemoteException::class)
    fun add(a: Int, b: Int): Long?
}

class AdderImpl : Adder, UnicastRemoteObject() {
    override fun add(a: Int, b: Int): Long? {
        return (a + b).toLong()
    }
}