org.conqat.lib.commons.equals

Class HashCodeUtils

java.lang.Object

org.conqat.lib.commons.equals.HashCodeUtils

public abstract class HashCodeUtils
extends java.lang.Object

This class provides utility methods on hash codes, usually used when overriding Object.hashCode().

Constructor Summary

Constructors

Constructor and Description
HashCodeUtils()

Method Summary

Modifier and Type	Method and Description
static int	hashArrayPart(java.lang.Object[] objects, int startInclusive, int endExclusive) Generates a hash code for part of an array.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashCodeUtils

public HashCodeUtils()

Method Detail

hashArrayPart

public static int hashArrayPart(java.lang.Object[] objects,
                                int startInclusive,
                                int endExclusive)

Generates a hash code for part of an array. The hash code is calculated from the hash codes of the given objects. Only objects that lie within the given start and end index in the array are considered. This method offers a better performance than creating a copy of the array that only contains the desired elements and then calling Objects.hashCode(Object).