| /* |
| * Copyright (C) The Apache Software Foundation. All rights reserved. |
| * |
| * This software is published under the terms of the Apache Software |
| * License version 1.1, a copy of which has been included with this |
| * distribution in the LICENSE.APL file. */ |
| |
| package org.apache.log4j.examples; |
| |
| import java.rmi.Remote; |
| import java.rmi.server.UnicastRemoteObject; |
| import java.rmi.RemoteException; |
| import java.rmi.Naming; |
| import java.util.Vector; |
| import java.io.*; |
| |
| /** |
| NumberCruncherClient is a simple client for factoring integers. A |
| remote NumberCruncher is contacted and asked to factor an |
| integer. The factors returned by the {@link NumberCruncherServer} |
| are displayed on the screen. |
| |
| <p>See <a href=doc-files/NumberCruncherClient.java>source</a> code of |
| <code>NumberCruncherClient</code> for more details. |
| |
| <pre> |
| <b>Usage:</b> java org.apache.log4j.examples.NumberCruncherClient HOST |
| where HOST is the machine where the NumberCruncherServer is running |
| </pre> |
| |
| <p>Note that class files for the example code is not included in |
| any of the distributed log4j jar files. You will have to add the |
| directory <code>/dir-where-you-unpacked-log4j/classes</code> to |
| your classpath before trying out the examples. |
| |
| @author Ceki Gülcü |
| |
| */ |
| public class NumberCruncherClient { |
| |
| |
| public static void main(String[] args) { |
| if(args.length == 1) { |
| try { |
| String url = "rmi://"+args[0]+ "/Factor"; |
| NumberCruncher nc = (NumberCruncher) Naming.lookup(url); |
| loop(nc); |
| } |
| catch(Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| else |
| usage("Wrong number of arguments."); |
| } |
| |
| static |
| void usage(String msg) { |
| System.err.println(msg); |
| System.err.println( |
| "Usage: java org.apache.log4j.examples.NumberCruncherClient HOST\n" + |
| " where HOST is the machine where the NumberCruncherServer is running."); |
| System.exit(1); |
| } |
| |
| |
| static |
| void loop(NumberCruncher nc) { |
| BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); |
| int i = 0; |
| while (true) { |
| System.out.print("Enter a number to factor, '-1' to quit: "); |
| try { |
| i = Integer.parseInt(in.readLine()); |
| } |
| catch(Exception e) { |
| e.printStackTrace(); |
| } |
| if(i == -1) { |
| System.out.print("Exiting loop."); |
| return; |
| } |
| else { |
| try { |
| System.out.println("Will attempt to factor "+i); |
| int[] factors = nc.factor(i); |
| System.out.print("The factors of "+i+" are"); |
| for(int k=0; k < factors.length; k++) { |
| System.out.print(" " + factors[k]); |
| } |
| System.out.println("."); |
| } |
| catch(RemoteException e) { |
| System.err.println("Could not factor "+i); |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |
| } |