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## org.apache.commons.net.util
Class SubnetUtils

    java.lang.Object
      org.apache.commons.net.util.SubnetUtils

    public class SubnetUtils

extends Object

A class that performs some subnet calculations given a network address and a subnet mask.

Since:
  2.0
Author:
See Also:
  "http://www.faqs.org/rfcs/rfc1519.html"

Nested Class Summary
`class` | `SubnetUtils.SubnetInfo` Convenience container for subnet summary information.

Constructor Summary
`SubnetUtils(String cidrNotation)` Constructor that takes a CIDR-notation string, e.g.
`SubnetUtils(String address, String mask)` Constructor that takes a dotted decimal address and a dotted decimal mask.

Method Summary
`SubnetUtils.SubnetInfo` | `getInfo()` Return a `SubnetUtils.SubnetInfo` instance that contains subnet-specific statistics
`boolean` | `isInclusiveHostCount()` Returns `true` if the return value of `SubnetUtils.SubnetInfo.getAddressCount()` includes the network address and broadcast addresses.
`void` | `setInclusiveHostCount(boolean inclusiveHostCount)` Set to `true` if you want the return value of `SubnetUtils.SubnetInfo.getAddressCount()` to include the network and broadcast addresses.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SubnetUtils

    public SubnetUtils(String cidrNotation)

  Constructor that takes a CIDR-notation string, e.g. "192.168.0.1/16"

  Parameters:
    `cidrNotation` - A CIDR-notation string, e.g. "192.168.0.1/16"
  Throws:
    `IllegalArgumentException` - if the parameter is invalid, i.e. does not match n.n.n.n/m where n=1-3 decimal digits, m = 1-3 decimal digits in range 1-32

### SubnetUtils

    public SubnetUtils(String address,
                       String mask)

  Constructor that takes 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

### isInclusiveHostCount

    public boolean isInclusiveHostCount()

  Returns `true` if the return value of `SubnetUtils.SubnetInfo.getAddressCount()` includes the network address and broadcast addresses.

  Since:
    2.2

### setInclusiveHostCount

    public void setInclusiveHostCount(boolean inclusiveHostCount)

  Set to `true` if you want the return value of `SubnetUtils.SubnetInfo.getAddressCount()` to include the network and broadcast addresses.

  Parameters:
    `inclusiveHostCount` -
  Since:
    2.2

### getInfo

    public final SubnetUtils.SubnetInfo getInfo()

  Return a `SubnetUtils.SubnetInfo` instance that contains subnet-specific statistics

  Returns:
    new instance

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