CollectionUtil.java Source code

Introduction

Here is the source code for CollectionUtil.java

Source

//package com.javadocking.util;

import java.util.List;

/**
 * This class contains a collection of static utility methods for java.util.Collection objects.
 * 
 * @author Heidi Rakels.
 */
public class CollectionUtil {

    /**
     * Determines if the given lists contain the same elements. We suppose that all the elements of the given lists 
     * are different.
     * 
     * @param    firstList                The first list.
     * @param    secondList                The second list.
     * @return                         True if the given lists contain the same elements, false otherwise.
     */
    public static boolean sameElements(List firstList, List secondList) {

        // The size hould be the same, otherwise stop.
        if (firstList.size() != secondList.size()) {
            return false;
        }

        // Iterate over the elements of the first list.
        for (int index = 0; index < firstList.size(); index++) {
            // Check if the element is also in the second list.
            if (!secondList.contains(firstList.get(index))) {
                return false;
            }
        }

        // They heve the same elements.
        return true;

    }

}