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:

"http://www.faqs.org/rfcs/rfc1519.html"

Constructor Summary

Constructors

Constructor and 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 and Description
boolean	isInRange(String address) Tests if the parameter address is in the range of usable endpoint addresses for this subnet.

Methods inherited from class java.lang.Object

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

Constructor Detail

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, i.e. does not match n.n.n.n where n=1-3 decimal digits and the mask is not all zeros

Method Detail

isInRange

public boolean isInRange(String address)

Tests if the parameter address is in the range of usable endpoint addresses for this subnet. This excludes the network and broadcast addresses.

Parameters:

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

Returns:

true if in range, false otherwise