shift List element - Java java.util

Java examples for java.util:List Element

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Description

shift List element

Demo Code

/* Copyright (c) 2006 Pyxis Technologies inc.
 *
 * This is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.//from  ww  w  . java 2s .  c  om
 *
 * This software is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF site:
 * http://www.fsf.org. */
//package com.book2s;

import java.util.List;

public class Main {
    public static void main(String[] argv) {
        List list = java.util.Arrays.asList("asdf", "book2s.com");
        System.out.println(shift(list));
    }

    public static <T> T shift(List<T> list) {
        return remove(list, 0);
    }

    private static <T> T remove(List<T> list, int position) {
        if (list.isEmpty()) {
            return null;
        }
        return list.remove(position);
    }

    public static <T> boolean isEmpty(T... objects) {
        return objects.length == 0;
    }
}

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