import java.math.*;import java.rmi.*;import java.rmi.server.*;//// PowerServiceServer//// Server for a RMI service that calculates powers//public class PowerServiceServer extends UnicastRemoteObject implements PowerService { public PowerServiceServer () throws RemoteException { super(); } // Calculate the square of a number public BigInteger square ( int number ) throws RemoteException { String numrep = String.valueOf(number); BigInteger bi = new BigInteger (numrep); // Square the number bi.multiply(bi); return (bi); } // Calculate the power of a number public BigInteger power ( int num1, int num2) throws RemoteException { String numrep = String.valueOf(num1); BigInteger bi = new BigInteger (numrep); bi = bi.pow(num2); return bi; } public static void main ( String args[] ) throws Exception { // Assign a security manager, in the event that dynamic // classes are loaded if (System.getSecurityManager() == null) System.setSecurityManager ( new RMISecurityManager() ); // Create an instance of our power service server ... PowerServiceServer svr = new PowerServiceServer(); // ... and bind it with the RMI Registry Naming.bind ("PowerService", svr); System.out.println ("Service bound...."); }}