Server Fib function: remove guard for negative input ( to match python tutorials)

Client: remove extra example calls

Author: Ann Witbrock

java/RPCClient.java

@@ -58,12 +58,6 @@ public static void main(String[] argv) {
       System.out.println(" [x] Requesting fib(30)");   
       response = fibonacciRpc.call("30");
       System.out.println(" [.] Got '" + response + "'");
-      System.out.println(" [x] Requesting fib(-1)");   
-      response = fibonacciRpc.call("-1");
-      System.out.println(" [.] Got '" + response + "'");
-      System.out.println(" [x] Requesting fib(a)");   
-      response = fibonacciRpc.call("a");
-      System.out.println(" [.] Got '" + response + "'");            
     }
     catch  (Exception e) {
       e.printStackTrace();

java/RPCServer.java

@@ -9,8 +9,9 @@ public class RPCServer {
   private static final String RPC_QUEUE_NAME = "rpc_queue";
 
   private static int fib(int n) {
-    if (n > 1) return fib(n-1) + fib(n-2);
-    else return n;
+    if (n ==0) return 0;
+    if (n == 1) return 1;
+    return fib(n-1) + fib(n-2);
   }
 
   public static void main(String[] argv) {