| /* |
| * 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 org.apache.commons.net.examples.nntp; |
| |
| import java.io.IOException; |
| import org.apache.commons.net.nntp.NNTPClient; |
| import org.apache.commons.net.nntp.NewsgroupInfo; |
| |
| /*** |
| * This is a trivial example using the NNTP package to approximate the |
| * Unix newsgroups command. It merely connects to the specified news |
| * server and issues fetches the list of newsgroups stored by the server. |
| * On servers that store a lot of newsgroups, this command can take a very |
| * long time (listing upwards of 30,000 groups). |
| ***/ |
| |
| public final class ListNewsgroups |
| { |
| |
| public static void main(String[] args) |
| { |
| if (args.length < 1) |
| { |
| System.err.println("Usage: newsgroups newsserver [pattern]"); |
| return; |
| } |
| |
| NNTPClient client = new NNTPClient(); |
| String pattern = args.length >= 2 ? args[1] : ""; |
| |
| try |
| { |
| client.connect(args[0]); |
| |
| int j = 0; |
| try { |
| for(String s : client.iterateNewsgroupListing(pattern)) { |
| j++; |
| System.out.println(s); |
| } |
| } catch (IOException e1) { |
| e1.printStackTrace(); |
| } |
| System.out.println(j); |
| |
| j = 0; |
| for(NewsgroupInfo n : client.iterateNewsgroups(pattern)) { |
| j++; |
| System.out.println(n.getNewsgroup()); |
| } |
| System.out.println(j); |
| } |
| catch (IOException e) |
| { |
| e.printStackTrace(); |
| } |
| finally |
| { |
| try |
| { |
| if (client.isConnected()) { |
| client.disconnect(); |
| } |
| } |
| catch (IOException e) |
| { |
| System.err.println("Error disconnecting from server."); |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| } |
| |
| } |
| |
| } |
| |
| |