Java™ Application Development on Linux - Dator

5.8 Introducing RMI141Example 5.11 The Session server implementationpackage net.multitool.RMIDemo;import net.multitool.RMIDemo.*;import java.rmi.*;import java.rmi.server.*;/** SessionImpl is the server class for the Session RMI interface.*/public classSessionImplextends UnicastRemoteObjectimplements Session{/** Constructor needed to ensure call to UnicastRemoteObject* constructor and to thus propagate the possible exception.*/public SessionImpl() throws RemoteException {super();}}/** A static main() for the server. */public static void main(String[] arglist){if (System.getSecurityManager() == null) {System.setSecurityManager(new RMISecurityManager());}}String rmiName = "//penfold/Session";try {Session adder = new SessionImpl();Naming.rebind(rmiName, adder);} catch (Exception e) {e.printStackTrace();}/** Implementation of the RMI method, add. */public int add(int x, int y) throws java.rmi.RemoteException{return x+y;}