org.dhcp4java

Class Util

java.lang.Object

org.dhcp4java.Util

public final class Util
extends Object

Version:

1.00

Author:

Stephan Hadinger

Method Summary

Modifier and Type	Method and Description
static void	appendHostAddress(StringBuilder sbuf, InetAddress addr) Even faster version than getHostAddress(java.net.InetAddress) when the address is not the only piece of information put in the string.
static String	getHostAddress(InetAddress addr) Faster version than InetAddress.getHostAddress().
static int	inetAddress2Int(InetAddress addr) Converts IPv4 InetAddress to 32 bits int.
static long	inetAddress2Long(InetAddress addr) Converts IPv4 InetAddress to 32 bits int, packages into a 64 bits long.
static InetAddress	int2InetAddress(int val) Converts 32 bits int to IPv4 InetAddress.
static InetAddress	long2InetAddress(long val) Converts 32 bits int packaged into a 64bits long to IPv4 InetAddress.
static byte[]	stringToBytes(String str)

Methods inherited from class java.lang.Object

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

Method Detail

stringToBytes

public static byte[] stringToBytes(String str)

int2InetAddress

public static final InetAddress int2InetAddress(int val)

Converts 32 bits int to IPv4 InetAddress.

Parameters:

val - int representation of IPv4 address

Returns:

the address object

long2InetAddress

public static final InetAddress long2InetAddress(long val)

Converts 32 bits int packaged into a 64bits long to IPv4 InetAddress.

Parameters:

val - int representation of IPv4 address

Returns:

the address object

inetAddress2Int

public static final int inetAddress2Int(InetAddress addr)

Converts IPv4 InetAddress to 32 bits int.

Parameters:

addr - IPv4 address object

Returns:

32 bits int

Throws:

NullPointerException - addr is null.

IllegalArgumentException - the address is not IPv4 (Inet4Address).

inetAddress2Long

public static final long inetAddress2Long(InetAddress addr)

Converts IPv4 InetAddress to 32 bits int, packages into a 64 bits long.

Parameters:

addr - IPv4 address object

Returns:

32 bits int

Throws:

NullPointerException - addr is null.

IllegalArgumentException - the address is not IPv4 (Inet4Address).

appendHostAddress

public static void appendHostAddress(StringBuilder sbuf,
                                     InetAddress addr)

Even faster version than getHostAddress(java.net.InetAddress) when the address is not the only piece of information put in the string.

Parameters:

sbuf - the string builder

addr - the Internet address

getHostAddress

public static String getHostAddress(InetAddress addr)

Faster version than InetAddress.getHostAddress().

Parameters:

addr - address

Returns:

String representation of address.