/*
 * [StringArrayCompare.java]
 *
 * Summary: compares arrays of Strings, by comparing first String elt.
 *
 * Copyright: (c) 2000-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  2.2 2008-04-06 add build to title, tidy code, fix spelling errors.
 */
package com.mindprod.esper;

import java.util.Comparator;

/**
 * compares arrays of Strings, by comparing first String elt.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 2.2 2008-04-06 add build to title, tidy code, fix spelling errors.
 * @since 2000
 */
final class StringArrayCompare implements Comparator<String[]>
    {
    /**
     * comparator for array sort
     *
     * @param a1 first array to compare
     * @param a2 second array to compare
     *
     * @return a1 - a2 effectively
     */
    public int compare( String[] a1, String[] a2 )
        {
        return a1[ 0 ].compareTo( a2[ 0 ] );
        }
    }