Java Utililty Methods Hash Code Calculate

List of utility methods to do Hash Code Calculate

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Description

The list of methods to do Hash Code Calculate are organized into topic(s).

Method

inthashCodeForDoubleArray(double[] a)
Returns a hash code for a double[] instance. 
if (a == null) {
    return 0;
int result = 193;
long temp;
for (int i = 0; i < a.length; i++) {
    temp = Double.doubleToLongBits(a[i]);
    result = 29 * result + (int) (temp ^ (temp >>> 32));
...
inthashCodeLowerCase(Object... toHash)
lower cases any strings and then hashes them 
for (int i = 0; i < toHash.length; i++) {
    Object o = toHash[i];
    if (o instanceof String) {
        toHash[i] = ((String) o).toLowerCase();
return hashCode(toHash);
inthashCodeNullSafe(final Object o)
hash Code Null Safe 
return o != null ? o.hashCode() : 0;
inthashCodeOf(Object o)
hash Code Of 
if (o != null)
    return o.hashCode();
else
    return 0;
inthashCodeOrDefault(Object obj)
hash Code Or Default 
return hashCodeOrDefault(obj, 0);
inthashCodeOrNull(Object[] array)
Returns a hash code for the elements of the given array, or 0 if it is null. 
return array == null ? 0 : hashCode(array, array.length);
inthashCodeOrZero(Object o)
hash Code Or Zero 
return o != null ? o.hashCode() : 0;
inthashCodeSafe(final Object value)
Determines the hash code of the given value by calling the hashCode method on the given object if it is not null. 
if (value == null) {
    return 0;
} else {
    return value.hashCode();