com.eaio.util.lang
Class Hex

java.lang.Object
  com.eaio.util.lang.Hex

public final class Hex
extends Object

Number-to-hexadecimal and hexadecimal-to-number conversions.

Version:

$Id: Hex.java 1888 2009-03-15 12:43:24Z johann $

Author:

Johann Burkard

See Also:

UUID

Method Summary

static Appendable	append(Appendable a, byte[] bytes) Turns a byte array into hex octets.
static Appendable	append(Appendable a, int in) Turns an int into hex octets.
static Appendable	append(Appendable a, int in, int length) Turns an int into hex octets.
static Appendable	append(Appendable a, long in) Turns a long into hex octets.
static Appendable	append(Appendable a, long in, int length) Turns a long into hex octets.
static Appendable	append(Appendable a, short in) Turns a short into hex octets.
static Appendable	append(Appendable a, short in, int length) Turns a short into hex octets.
static long	parseLong(CharSequence s) Parses a long from a hex encoded number.
static short	parseShort(String s) Parses a short from a hex encoded number.

Methods inherited from class java.lang.Object

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

Method Detail

append

public static Appendable append(Appendable a,
                                short in)

Turns a short into hex octets.

Parameters:

a - the Appendable, may not be null

in - the integer

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                short in,
                                int length)

Turns a short into hex octets.

Parameters:

a - the Appendable, may not be null

in - the integer

length - the number of octets to produce

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                int in)

Turns an int into hex octets.

Parameters:

a - the Appendable, may not be null

in - the integer

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                int in,
                                int length)

Turns an int into hex octets.

Parameters:

a - the Appendable, may not be null

in - the integer

length - the number of octets to produce

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                long in)

Turns a long into hex octets.

Parameters:

a - the Appendable, may not be null

in - the long

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                long in,
                                int length)

Turns a long into hex octets.

Parameters:

a - the Appendable, may not be null

in - the long

length - the number of octets to produce

Returns:

Appendable

append

public static Appendable append(Appendable a,
                                byte[] bytes)

Turns a byte array into hex octets.

Parameters:

a - the Appendable, may not be null

bytes - the byte array

Returns:

Appendable

parseLong

public static long parseLong(CharSequence s)

Parses a long from a hex encoded number. This method will skip all characters that are not 0-9, A-F and a-f.

Returns 0 if the CharSequence does not contain any interesting characters.

Parameters:

s - the CharSequence to extract a long from, may not be null

Returns:

a long

Throws:

NullPointerException - if the CharSequence is null

parseShort

public static short parseShort(String s)

Parses a short from a hex encoded number. This method will skip all characters that are not 0-9, A-F and a-f.

Returns 0 if the CharSequence does not contain any interesting characters.

Parameters:

s - the CharSequence to extract a short from, may not be null

Returns:

a short

Throws:

NullPointerException - if the CharSequence is null