    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017    package examples.cidr;
    018
    019    import java.util.Arrays;
    020    import java.util.Scanner;
    021
    022    import org.apache.commons.net.util.SubnetUtils;
    023    import org.apache.commons.net.util.SubnetUtils.SubnetInfo;
    024
    025    /**
    026     * Example class that shows how to use the {@link SubnetUtils} class.
    027     * @author Rory Winston <rwinston@apache.org>
    028     *
    029     */
    030    public class SubnetUtilsExample {
    031
    032        public static void main(String[] args) {
    033            String subnet = "192.168.0.3/31";
    034            SubnetUtils utils = new SubnetUtils(subnet);
    035            SubnetInfo info = utils.getInfo();
    036
    037            System.out.printf("Subnet Information for %s:\n", subnet);
    038            System.out.println("--------------------------------------");
    039            System.out.printf("IP Address:\t\t\t%s\t[%s]\n", info.getAddress(),
    040                    Integer.toBinaryString(info.asInteger(info.getAddress())));
    041            System.out.printf("Netmask:\t\t\t%s\t[%s]\n", info.getNetmask(),
    042                    Integer.toBinaryString(info.asInteger(info.getNetmask())));
    043            System.out.printf("CIDR Representation:\t\t%s\n\n", info.getCidrSignature());
    044
    045            System.out.printf("Supplied IP Address:\t\t%s\n\n", info.getAddress());
    046
    047            System.out.printf("Network Address:\t\t%s\t[%s]\n", info.getNetworkAddress(),
    048                    Integer.toBinaryString(info.asInteger(info.getNetworkAddress())));
    049            System.out.printf("Broadcast Address:\t\t%s\t[%s]\n", info.getBroadcastAddress(),
    050                    Integer.toBinaryString(info.asInteger(info.getBroadcastAddress())));
    051            System.out.printf("Low Address:\t\t\t%s\t[%s]\n", info.getLowAddress(),
    052                    Integer.toBinaryString(info.asInteger(info.getLowAddress())));
    053            System.out.printf("High Address:\t\t\t%s\t[%s]\n", info.getHighAddress(),
    054                    Integer.toBinaryString(info.asInteger(info.getHighAddress())));
    055
    056            System.out.printf("Total usable addresses: \t%d\n", info.getAddressCount());
    057            System.out.printf("Address List: %s\n\n", Arrays.toString(info.getAllAddresses()));
    058
    059            final String prompt ="Enter an IP address (e.g. 192.168.0.10):";
    060            System.out.println(prompt);
    061            Scanner scanner = new Scanner(System.in);
    062            while (scanner.hasNextLine()) {
    063                String address = scanner.nextLine();
    064                System.out.println("The IP address [" + address + "] is "
    065                        + (info.isInRange(address) ? "" : "not ")
    066                        + "within the subnet [" + subnet + "]");
    067                System.out.println(prompt);
    068            }
    069
    070        }
    071
    072    }