测试代码编辑器

/*
* 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.cidr;

import java.util.Arrays;
import java.util.Scanner;

import org.apache.commons.net.util.SubnetUtils;
import org.apache.commons.net.util.SubnetUtils.SubnetInfo;

/**
* Example class that shows how to use the {@link SubnetUtils} class.
* @author Rory Winston <rwinston@apache.org>
*
*/
public class SubnetUtilsExample {

public static void main(String[] args) {
String subnet = "192.168.0.3/31";
SubnetUtils utils = new SubnetUtils(subnet);
SubnetInfo info = utils.getInfo();

System.out.printf("Subnet Information for %s:\n", subnet);
System.out.println("--------------------------------------");
System.out.printf("IP Address:\t\t\t%s\t[%s]\n", info.getAddress(),
Integer.toBinaryString(info.asInteger(info.getAddress())));
System.out.printf("Netmask:\t\t\t%s\t[%s]\n", info.getNetmask(),
Integer.toBinaryString(info.asInteger(info.getNetmask())));
System.out.printf("CIDR Representation:\t\t%s\n\n", info.getCidrSignature());

System.out.printf("Supplied IP Address:\t\t%s\n\n", info.getAddress());

System.out.printf("Network Address:\t\t%s\t[%s]\n", info.getNetworkAddress(),
Integer.toBinaryString(info.asInteger(info.getNetworkAddress())));
System.out.printf("Broadcast Address:\t\t%s\t[%s]\n", info.getBroadcastAddress(),
Integer.toBinaryString(info.asInteger(info.getBroadcastAddress())));
System.out.printf("Low Address:\t\t\t%s\t[%s]\n", info.getLowAddress(),
Integer.toBinaryString(info.asInteger(info.getLowAddress())));
System.out.printf("High Address:\t\t\t%s\t[%s]\n", info.getHighAddress(),
Integer.toBinaryString(info.asInteger(info.getHighAddress())));

System.out.printf("Total usable addresses: \t%d\n", Integer.valueOf(info.getAddressCount()));
System.out.printf("Address List: %s\n\n", Arrays.toString(info.getAllAddresses()));

final String prompt ="Enter an IP address (e.g. 192.168.0.10):";
System.out.println(prompt);
Scanner scanner = new Scanner(System.in);
while (scanner.hasNextLine()) {
String address = scanner.nextLine();
System.out.println("The IP address [" + address + "] is "
+ (info.isInRange(address) ? "" : "not ")
+ "within the subnet [" + subnet + "]");
System.out.println(prompt);
}

}

}