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18 package examples.nntp;
19
20 import java.io.IOException;
21 import org.apache.commons.net.nntp.NNTPClient;
22 import org.apache.commons.net.nntp.NewsgroupInfo;
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33 public final class ListNewsgroups
34 {
35
36 public static void main(String[] args)
37 {
38 if (args.length < 1)
39 {
40 System.err.println("Usage: newsgroups newsserver [pattern]");
41 return;
42 }
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44 NNTPClient client = new NNTPClient();
45 String pattern = args.length >= 2 ? args[1] : "";
46
47 try
48 {
49 client.connect(args[0]);
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51 int j = 0;
52 try {
53 for(String s : client.iterateNewsgroupListing(pattern)) {
54 j++;
55 System.out.println(s);
56 }
57 } catch (IOException e1) {
58 e1.printStackTrace();
59 }
60 System.out.println(j);
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62 j = 0;
63 for(NewsgroupInfo n : client.iterateNewsgroups(pattern)) {
64 j++;
65 System.out.println(n.getNewsgroup());
66 }
67 System.out.println(j);
68 }
69 catch (IOException e)
70 {
71 e.printStackTrace();
72 }
73 finally
74 {
75 try
76 {
77 if (client.isConnected()) {
78 client.disconnect();
79 }
80 }
81 catch (IOException e)
82 {
83 System.err.println("Error disconnecting from server.");
84 e.printStackTrace();
85 System.exit(1);
86 }
87 }
88
89 }
90
91 }
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