Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright JTheque (Baptiste Wicht)
 *
 * 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.
 */

import java.util.Collection;

import java.util.Iterator;

public class Main {
    /**
     * Return the last element of a collection. This method iterates over the complete collection to found
     * the last element.
     *
     * @param collection The collection to get the last element from.
     * @param <T> The type of value.
     * @return The last element of the collection. If there is no element, the method return null.
     */
    public static <T> T last(Collection<T> collection) {
        if (collection.isEmpty()) {
            return null;
        }

        Iterator<T> iterator = collection.iterator();

        for (int i = 0; i < collection.size() - 1; i++) {
            iterator.next();
        }

        return iterator.next();
    }
}