java-RMI-math-operator-server-client.zip_Math Class

/*************************************************************** * Client program for the mathematical operation RMI example. *****************************************************************/ import java.io.*; import java.util.Scanner; import java.rmi.Naming; public class OperClient { public static void main (String[] argv) { try { OperInterface oper = // your PC address here (OperInterface) Naming.lookup ("//127.0.0.1/Oper"); System.out.println("RMI mathematical operation client:\nThis client program uses remote methods to do a math operation and gives you the result"); int operator =0; Scanner input = new Scanner( System.in); System.out.println("Select the math operation by entering the corresponiding number\n1. addition\n2. subtraction\n3. multiplication\n4. division\n5. find maximum\n6. find minimum"); while (operator== 0) { int checkOper = input.nextInt(); if ( checkOper == 1) { operator = checkOper ; System.out.println ("Addition has been chosen\n"); } else if ( checkOper == 2) { operator = checkOper ; System.out.println ("Subtraction has been chosen\n"); } else if ( checkOper == 3) { operator= checkOper ; System.out.println ("Multiplication has been chosen\n"); } else if ( checkOper == 4) { operator = checkOper ; System.out.println ("Division has been chosen\n"); } else if ( checkOper == 5) { operator = checkOper ; System.out.println ("Find maximum has been chosen\n"); } else if ( checkOper == 6) { operator = checkOper ; System.out.println ("Find minimum has been chosen\n"); } else System.out.println ("You must select a digit between 1-6 that represents an operation as shown above\n"); } System.out.println("Enter 2 integer numbers on which the operation will take place"); int num1 = input.nextInt(); int num2 = input.nextInt(); if (operator == 4) { while ( num2 == 0) { System.out.println ("Can't divide by zero, enter another number"); num2 = input.nextInt(); } } System.out.print("The result is: "); if ( operator == 1) System.out.println (oper.add(num1,num2)); if ( operator == 2) System.out.println (oper.sub(num1,num2)); if ( operator == 3) System.out.println (oper.mul(num1,num2)); if ( operator == 4) System.out.println (oper.div(num1,num2)); if ( operator == 5) System.out.println (oper.max(num1,num2)); if ( operator == 6) System.out.println (oper.min(num1,num2)); } catch (Exception e){ System.out.println ("OperClient exception: " + e);} } }