| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package examples; |
| |
| import java.rmi.RemoteException; |
| import java.rmi.Naming; |
| 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(); |
| } |
| } |
| } |
| } |
| } |