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SO Common utility classes

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/*
 * Copyright 2018 Syam Pillai
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.storedobject.common;

import java.util.Collection;

public class ArrayList extends java.util.ArrayList {

    public ArrayList() {
    }

    public ArrayList(int initialCapacity) {
        super(initialCapacity);
    }

    public ArrayList(Collection c) {
        super(c);
    }

    public E firstElement() {
        return size() > 0 ? get(0) : null;
    }

    public E lastElement() {
        return size() > 0 ? get(size() - 1) : null;
    }
}