net.sf.eos.util
Class EqualsAndHashUtil

java.lang.Object
  net.sf.eos.util.EqualsAndHashUtil

public final class EqualsAndHashUtil
extends Object

Utility class to support Object.equals(Object) and Object.hashCode() method implementation.

Since:

0.1.0

Version:

1.0.0

Author:

Sascha Kohlmann

Method Summary

static int	hash(boolean bool) Creates a hash code for the given boolean according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(boolean[] arr) Creates a hash code for the given array of booleans according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(byte b) Creates a hash code for the given byte according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(byte[] arr) Creates a hash code for the given array of bytes according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(char c) Creates a hash code for the given char according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(char[] arr) Creates a hash code for the given array of chars according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(double d) Creates a hash code for the given double according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(double[] arr) Creates a hash code for the given array of doubles according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(float f) Creates a hash code for the given float according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(float[] arr) Creates a hash code for the given array of floats according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(int i) Creates a hash code for the given int according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(int[] arr) Creates a hash code for the given array of ints according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(long l) Creates a hash code for the given long according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(long[] arr) Creates a hash code for the given array of longs according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(Object obj) Creates a hash code for the given Object according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(Object[] arr) Creates a hash code for the given array of Objects according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(short s) Creates a hash code for the given short according to the rules stated in "Effective Java" by Joshua Bloch.
static int	hash(short[] arr) Creates a hash code for the given array of shorts according to the rules stated in "Effective Java" by Joshua Bloch.
static boolean	isEqual(boolean[] own, boolean[] other) boolean array equality check.
static boolean	isEqual(boolean own, boolean other) boolean equality check.
static boolean	isEqual(byte[] own, byte[] other) byte array equality check.
static boolean	isEqual(byte own, byte other) byte equality check.
static boolean	isEqual(char[] own, char[] other) char array equality check.
static boolean	isEqual(char own, char other) char equality check.
static boolean	isEqual(double[] own, double[] other) double array equality check.
static boolean	isEqual(double own, double other) double equality check.
static boolean	isEqual(float[] own, float[] other) float array equality check.
static boolean	isEqual(float own, float other) float equality check.
static boolean	isEqual(int[] own, int[] other) int array equality check.
static boolean	isEqual(int own, int other) int equality check.
static boolean	isEqual(long[] own, long[] other) long array equality check.
static boolean	isEqual(long own, long other) long equality check.
static boolean	isEqual(Object[] own, Object[] other) Object array equality check.
static boolean	isEqual(Object own, Object other) Object equality check.
static boolean	isEqual(short[] own, short[] other) short array equality check.
static boolean	isEqual(short own, short other) short equality check.

Methods inherited from class java.lang.Object

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

Method Detail

isEqual

public static boolean isEqual(boolean own,
                              boolean other)

boolean equality check.

Parameters:

own - the first boolean

other - the second <boolean

Returns:

true if the booleans are equal, <false otherwise

isEqual

public static boolean isEqual(char own,
                              char other)

char equality check.

Parameters:

own - the first char

other - the second char

Returns:

true if the chars are equal, false otherwise

isEqual

public static boolean isEqual(byte own,
                              byte other)

byte equality check.

Parameters:

own - the first byte

other - the second byte

Returns:

true if the bytes are equal, false otherwise

isEqual

public static boolean isEqual(short own,
                              short other)

short equality check.

Parameters:

own - the first short

other - the second short

Returns:

true if the shorts are equal, false otherwise

isEqual

public static boolean isEqual(int own,
                              int other)

int equality check.

Parameters:

own - the first int

other - the second int

Returns:

true if the ints are equal, false otherwise

isEqual

public static boolean isEqual(long own,
                              long other)

long equality check.

Parameters:

own - the first long

other - the second long

Returns:

true if the longs are equal, false otherwise

isEqual

public static boolean isEqual(float own,
                              float other)

float equality check.

Parameters:

own - the first float

other - the second float

Returns:

true if the floats are equal, false otherwise

isEqual

public static boolean isEqual(double own,
                              double other)

double equality check.

Parameters:

own - the first double

other - the second double

Returns:

true if the doubles are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              Object own,
                              @Nullable
                              Object other)

Object equality check.

Parameters:

own - the first Object

other - the second Object

Returns:

true if the Objects are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              boolean[] own,
                              @Nullable
                              boolean[] other)

boolean array equality check.

Parameters:

own - the first array of booleans

other - the second array of booleans

Returns:

true if the two boolean arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              char[] own,
                              @Nullable
                              char[] other)

char array equality check.

Parameters:

own - the first array of chars

other - the second array of chars

Returns:

true if the two char arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              byte[] own,
                              @Nullable
                              byte[] other)

byte array equality check.

Parameters:

own - the first array of bytes

other - the second array of bytes

Returns:

true if the two byte arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              short[] own,
                              @Nullable
                              short[] other)

short array equality check.

Parameters:

own - the first array of shorts

other - the second array of shorts

Returns:

true if the two short arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              int[] own,
                              @Nullable
                              int[] other)

int array equality check.

Parameters:

own - the first array of ints

other - the second array of ints

Returns:

true if the two int arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              long[] own,
                              @Nullable
                              long[] other)

long array equality check.

Parameters:

own - the first array of longs

other - the second array of longs

Returns:

true if the two long arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              float[] own,
                              @Nullable
                              float[] other)

float array equality check.

Parameters:

own - the first array of floats

other - the second array of floats

Returns:

true if the two float arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              double[] own,
                              @Nullable
                              double[] other)

double array equality check.

Parameters:

own - the first array of doubles

other - the second array of doubles

Returns:

true if the two double arrays are equal, false otherwise

isEqual

public static boolean isEqual(@Nullable
                              Object[] own,
                              @Nullable
                              Object[] other)

Object array equality check.

Parameters:

own - the first array of Objects

other - the second array of Objects

Returns:

true if the two Object arrays are equal, false otherwise

hash

public static int hash(@Nullable
                       Object obj)

Creates a hash code for the given Object according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

obj - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(boolean bool)

Creates a hash code for the given boolean according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

bool - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(byte b)

Creates a hash code for the given byte according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

b - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(char c)

Creates a hash code for the given char according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

c - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(short s)

Creates a hash code for the given short according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

s - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(int i)

Creates a hash code for the given int according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

i - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(long l)

Creates a hash code for the given long according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

l - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(float f)

Creates a hash code for the given float according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

f - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(double d)

Creates a hash code for the given double according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

d - the object to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       Object[] arr)

Creates a hash code for the given array of Objects according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of Objects to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       boolean[] arr)

Creates a hash code for the given array of booleans according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of booleans to compute the hash code

Returns:

a hash code

hash

public static int hash(@Nullable
                       byte[] arr)

Creates a hash code for the given array of bytes according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of bytes to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       char[] arr)

Creates a hash code for the given array of chars according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of chars to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       short[] arr)

Creates a hash code for the given array of shorts according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of shorts to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       int[] arr)

Creates a hash code for the given array of ints according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of ints to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       long[] arr)

Creates a hash code for the given array of longs according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of longs to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       float[] arr)

Creates a hash code for the given array of floats according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of floats to compute the hash code for

Returns:

a hash code

hash

public static int hash(@Nullable
                       double[] arr)

Creates a hash code for the given array of doubles according to the rules stated in "Effective Java" by Joshua Bloch.

Parameters:

arr - the array of doubles to compute the hash code for

Returns:

a hash code