Module org.htmlunit

Package org.htmlunit.util

Class SubnetUtils

java.lang.Object

org.htmlunit.util.SubnetUtils

public class SubnetUtils
extends Object

Performs subnet calculations given a network address and a subnet mask. Inspired by org.apache.commons.net.util.SubnetUtils.

Author:

Ronald Brill

See Also:

• "https://www.faqs.org/rfcs/rfc1519.html"

Constructor Summary

Constructors

Constructor	Description
SubnetUtils(String address, String mask)	Constructs an instance from a dotted-decimal address and a dotted-decimal mask.

Method Summary

Modifier and Type	Method	Description
boolean	isInRange(String address)	Returns whether the given dotted-decimal IPv4 address is in the usable endpoint range for this subnet.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SubnetUtils

public SubnetUtils(String address,
 String mask)

Constructs an instance from a dotted-decimal address and a dotted-decimal mask.

Parameters:

address - an IP address, e.g. "192.168.0.1"

mask - a dotted-decimal netmask, e.g. "255.255.0.0"

Throws:

IllegalArgumentException - if the address or mask is invalid

Method Details

isInRange

public boolean isInRange(String address)

Returns whether the given dotted-decimal IPv4 address is in the usable endpoint range for this subnet. The network and broadcast addresses are excluded.

Parameters:

address - a dot-delimited IPv4 address, e.g. "192.168.0.1"

Returns:

true if the address is in the usable range, false otherwise