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 and broadcast addresses.

  Returns:

  true if the hostcount includes the network 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 - true if network and broadcast addresses are to be included

  Since:

  2.2

• getInfo

  public final SubnetUtils.SubnetInfo getInfo()

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

  Returns:

  new instance