Package com.yahoo.collections

Class ByteArrayComparator

java.lang.Object

com.yahoo.collections.ByteArrayComparator

public class ByteArrayComparator
extends Object

Utility class which is useful when implementing Comparable and one needs to compare byte arrays as instance variables.

Author:

Einar M R Rosenvinge

Constructor Summary

Constructors

Constructor	Description
ByteArrayComparator()

Method Summary

Modifier and Type	Method	Description
static int	compare(byte[] first, byte[] second)	Compare the arguments.

Methods inherited from class java.lang.Object

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

Constructor Details

ByteArrayComparator

public ByteArrayComparator()

Method Details

compare

public static int compare(byte[] first,
 byte[] second)

Compare the arguments. Shorter arrays are always considered smaller than longer arrays. For arrays of equal lengths, the elements are compared one-by-one. Whenever two corresponding elements in the two arrays are non-equal, the method returns. If all elements at corresponding positions in the two arrays are equal, the arrays are considered equal.

Parameters:

first - a byte array to be compared

second - a byte array to be compared

Returns:

0 if the arguments are equal, -1 if the first argument is smaller, 1 if the second argument is smaller

Throws:

NullPointerException - if any of the arguments are null