Java List Tail tail(List<T> l)

Description

Returns the tail of the provided List i.e. the sublist which contains all elements of the given list except the #head(List) head .

License

Open Source License

Parameter

Parameter	Description
l	the list whose tail is sought.
T	the type of the List.

Exception

Parameter	Description
NullPointerException	if l is null
UnsupportedOperationException	if the provided list was empty.

Return

the tail sublist, which will be an empty list if the provided list had only a single element.

Declaration

public static <T> List<T> tail(List<T> l)

Method Source Code

//package com.java2s;
/*/*from   w w w.ja v a2 s  . c o  m*/
 * Copyright (C) 2005-2015 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.List;

public class Main {
    /**
     * Returns the tail of the provided List i&#46;e&#46; the sublist which contains
     * all elements of the given list except the {@link #head(List) head}.
     *
     * @param l the list whose tail is sought.
     * @param <T> the type of the List.
     * @return the tail sublist, which will be an empty list if the provided list had only a single element.
     * @throws NullPointerException if l is {@code null}
     * @throws UnsupportedOperationException if the provided list was empty.
     */
    public static <T> List<T> tail(List<T> l) {
        if (l.isEmpty()) {
            throw new UnsupportedOperationException(
                    "Cannot get tail of empty list.");
        } else {
            return l.subList(1, l.size());
        }
    }
}

Java List Tail tail(List l)