org.davesag.generica.util
Class HashcodeMaker

java.lang.Object
  org.davesag.generica.util.HashcodeMaker

Deprecated. use org.apache.commons.lang.builder.HashCodeBuilder

public final class HashcodeMaker

extends Object

Methods which allow easy implementation of hashcode. This was inspired from recommendations in the book Effective Java , by Joshua Bloch.

Since:

Generica 1.0

Version:

CVS Revision $Id: HashcodeMaker.java,v 1.6 2004/04/08 13:19:08 davesag Exp $

Author:

Dave Sag http://www.davesag.com

Field Summary

static int

SEED Deprecated. An initial value for a hashCode, to which is added contributions from fields.

Constructor Summary

HashcodeMaker()
Deprecated.

Method Summary

static int	hash(int aSeed, boolean aBoolean) Deprecated. booleans.
static int	hash(int aSeed, boolean[] aArray) Deprecated. Arrays of booleans.
static int	hash(int aSeed, byte[] aArray) Deprecated. Arrays of bytes.
static int	hash(int aSeed, char aChar) Deprecated. chars.
static int	hash(int aSeed, char[] aArray) Deprecated. Arrays of chars.
static int	hash(int aSeed, double aDouble) Deprecated. doubles.
static int	hash(int aSeed, double[] aArray) Deprecated. Arrays of doubles.
static int	hash(int aSeed, float aFloat) Deprecated. floats.
static int	hash(int aSeed, float[] aArray) Deprecated. Arrays of floats.
static int	hash(int aSeed, int aInt) Deprecated. integers.
static int	hash(int aSeed, int[] aArray) Deprecated. Arrays of integers.
static int	hash(int aSeed, long aLong) Deprecated. longs.
static int	hash(int aSeed, long[] aArray) Deprecated. Arrays of longs
static int	hash(int aSeed, Object aObject) Deprecated. Possibly-null Object fields.
static int	hash(int aSeed, Object[] aArray) Deprecated. Arrays of Objects.
static int	hash(int aSeed, short[] aArray) Deprecated. Arrays of shorts.

Methods inherited from class java.lang.Object

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

Field Detail

SEED

public static final int SEED

Deprecated.

An initial value for a hashCode, to which is added contributions from fields. Using a non-zero value decreases collisons of hashCode values.

See Also:

Constant Field Values

Constructor Detail

HashcodeMaker

public HashcodeMaker()

Deprecated.

Method Detail

hash

public static int hash(int aSeed,
                       boolean aBoolean)

Deprecated.

booleans.

Parameters:

aSeed - seed number

aBoolean - boolean value

Returns:

hash code

hash

public static int hash(int aSeed,
                       char aChar)

Deprecated.

chars.

Parameters:

aSeed - seed number

aChar - char value

Returns:

hash code

hash

public static int hash(int aSeed,
                       int aInt)

Deprecated.

integers. Note that byte and short are handled by this method, through implicit conversion.

Parameters:

aSeed - seed number

aInt - int value

Returns:

hash code

hash

public static int hash(int aSeed,
                       long aLong)

Deprecated.

longs.

Parameters:

aSeed - seed number

aLong - long value

Returns:

hash code

hash

public static int hash(int aSeed,
                       float aFloat)

Deprecated.

floats.

Parameters:

aSeed - seed number

aFloat - float value

Returns:

hash code

hash

public static int hash(int aSeed,
                       double aDouble)

Deprecated.

doubles.

Parameters:

aSeed - seed number

aDouble - double value

Returns:

hash code

hash

public static int hash(int aSeed,
                       Object aObject)

Deprecated.

Possibly-null Object fields.

Parameters:

aSeed - seed number

aObject - object to hash.

Returns:

hash code

hash

public static int hash(int aSeed,
                       Object[] aArray)

Deprecated.

Arrays of Objects.

Parameters:

aSeed - seed number

aArray - array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       boolean[] aArray)

Deprecated.

Arrays of booleans.

Parameters:

aSeed - seed number

aArray - boolean array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       char[] aArray)

Deprecated.

Arrays of chars.

Parameters:

aSeed - seed number

aArray - char array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       byte[] aArray)

Deprecated.

Arrays of bytes.

Parameters:

aSeed - seed number

aArray - byte array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       short[] aArray)

Deprecated.

Arrays of shorts.

Parameters:

aSeed - seed number

aArray - short array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       int[] aArray)

Deprecated.

Arrays of integers.

Parameters:

aSeed - seed number

aArray - int array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       long[] aArray)

Deprecated.

Arrays of longs

Parameters:

aSeed - seed number

aArray - long array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       float[] aArray)

Deprecated.

Arrays of floats.

Parameters:

aSeed - seed number

aArray - float array to hash

Returns:

hash code

hash

public static int hash(int aSeed,
                       double[] aArray)

Deprecated.

Arrays of doubles.

Parameters:

aSeed - seed number

aArray - double array to hash

Returns:

hash code