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17 package org.apache.commons.net.examples.cidr;
18
19 import java.nio.charset.Charset;
20 import java.util.Arrays;
21 import java.util.Scanner;
22
23 import org.apache.commons.net.util.SubnetUtils;
24 import org.apache.commons.net.util.SubnetUtils.SubnetInfo;
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28
29 public class SubnetUtilsExample {
30
31 public static void main(final String[] args) {
32 final String subnet = "192.168.0.3/31";
33 final SubnetUtils utils = new SubnetUtils(subnet);
34 final SubnetInfo info = utils.getInfo();
35
36 System.out.printf("Subnet Information for %s:%n", subnet);
37 System.out.println("--------------------------------------");
38 System.out.printf("IP Address:\t\t\t%s\t[%s]%n", info.getAddress(), Integer.toBinaryString(info.asInteger(info.getAddress())));
39 System.out.printf("Netmask:\t\t\t%s\t[%s]%n", info.getNetmask(), Integer.toBinaryString(info.asInteger(info.getNetmask())));
40 System.out.printf("CIDR Representation:\t\t%s%n%n", info.getCidrSignature());
41
42 System.out.printf("Supplied IP Address:\t\t%s%n%n", info.getAddress());
43
44 System.out.printf("Network Address:\t\t%s\t[%s]%n", info.getNetworkAddress(), Integer.toBinaryString(info.asInteger(info.getNetworkAddress())));
45 System.out.printf("Broadcast Address:\t\t%s\t[%s]%n", info.getBroadcastAddress(), Integer.toBinaryString(info.asInteger(info.getBroadcastAddress())));
46 System.out.printf("Low Address:\t\t\t%s\t[%s]%n", info.getLowAddress(), Integer.toBinaryString(info.asInteger(info.getLowAddress())));
47 System.out.printf("High Address:\t\t\t%s\t[%s]%n", info.getHighAddress(), Integer.toBinaryString(info.asInteger(info.getHighAddress())));
48
49 System.out.printf("Total usable addresses: \t%d%n", Long.valueOf(info.getAddressCountLong()));
50 System.out.printf("Address List: %s%n%n", Arrays.toString(info.getAllAddresses()));
51
52 final String prompt = "Enter an IP address (e.g. 192.168.0.10):";
53 System.out.println(prompt);
54 try (final Scanner scanner = new Scanner(System.in, Charset.defaultCharset().name())) {
55 while (scanner.hasNextLine()) {
56 final String address = scanner.nextLine();
57 System.out.println("The IP address [" + address + "] is " + (info.isInRange(address) ? "" : "not ") + "within the subnet [" + subnet + "]");
58 System.out.println(prompt);
59 }
60 }
61 }
62
63 }