Package com.arjuna.ats.arjuna.utils

Class Utility

java.lang.Object

com.arjuna.ats.arjuna.utils.Utility

public class Utility
extends Object

Various useful functions that we wrap in a single class. Some of these functions are needed simply for backwards compatibility with older versions of Java.

Since:

JTS 1.0.

Version:

$Id: Utility.java 2342 2006-03-30 13:06:17Z $

Author:

Mark Little (mark@arjuna.com)

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BACKLOG	The maximum queue length for incoming connection indications (a request to connect)
static final int	MAX_PORT	Maximum value for a socket port

Constructor Summary

Constructors

Constructor	Description
Utility()

Method Summary

Modifier and Type	Method	Description
static String	getDefaultProcessId()
static final int	getpid()
static Uid	getProcessUid()
static int	hexStringToInt(String s)	Convert a hex String to an integer.
static long	hexStringToLong(String s)	Convert a hex String to a long
static long[]	hostInetAddr()
static InetAddress	hostNameToInetAddress(String host)	Convert a host name into an InetAddress object
static String	intToHexString(int number)	Convert integer to hex String.
static boolean	isAndroid()
static final boolean	isWindows()
static String	longToHexString(long number)	Convert a long to a hex String.
static final void	setProcess(Process p)
static void	validatePortRange(int port)

Methods inherited from class java.lang.Object

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

Field Details

BACKLOG

public static final int BACKLOG

The maximum queue length for incoming connection indications (a request to connect)

See Also:

• Constant Field Values

MAX_PORT

public static final int MAX_PORT

Maximum value for a socket port

See Also:

• Constant Field Values

Constructor Details

Utility

public Utility()

Method Details

intToHexString

public static String intToHexString(int number)
                             throws NumberFormatException

Convert integer to hex String.

Throws:

NumberFormatException

hexStringToInt

public static int hexStringToInt(String s)
                          throws NumberFormatException

Convert a hex String to an integer. Be careful of -1. Java IO is really bad!

Throws:

NumberFormatException

longToHexString

public static String longToHexString(long number)
                              throws NumberFormatException

Convert a long to a hex String.

Throws:

NumberFormatException

hexStringToLong

public static long hexStringToLong(String s)
                            throws NumberFormatException

Convert a hex String to a long

Throws:

NumberFormatException

hostInetAddr

public static long[] hostInetAddr()
                           throws UnknownHostException

Returns:

Long(s) representing the ip v6 address of the local machine. Essentially the bytes of the InetAddress are shuffled into the long(s). This was once part of the Uid class but has been separated for general availability.

Throws:

UnknownHostException

Since:

JTS 2.1.

hostNameToInetAddress

public static InetAddress hostNameToInetAddress(String host)
                                         throws UnknownHostException

Convert a host name into an InetAddress object

Parameters:

host - if empty or null then the loopback address is used

Returns:

an InetAddress structure corresponding the desired host name

Throws:

UnknownHostException - if the hostname cannot be found

getpid

public static final int getpid()

Returns:

the process id. This had better be unique between processes on the same machine. If not we're in trouble!

Since:

JTS 2.1.

getProcessUid

public static Uid getProcessUid()

Returns:

a Uid representing this process.

Since:

JTS 2.1.

isWindows

public static final boolean isWindows()

setProcess

public static final void setProcess(Process p)

validatePortRange

public static void validatePortRange(int port)

getDefaultProcessId

public static String getDefaultProcessId()

isAndroid

public static boolean isAndroid()