public String toString(){
  StringBuffer result=new StringBuffer(ipAddress.toString());
  result.append("/");
  result.append(extendedNetworkPrefix);
  return result.toString();
}

public String toString ( ) { StringBuffer result = new StringBuffer ( ipAddress . toString ( ) ) ; result . append ( "/" ) ; result . append ( extendedNetworkPrefix ) ; return result . toString ( ) ; }
convert the ip range into a string representation .
