将对象列表[a，1，b，2]转换为映射{a

/*

 *  Licensed to the Apache Software Foundation (ASF) under one

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 *  distributed with this work for additional information

 *  regarding copyright ownership.  The ASF licenses this file

 *  to you 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.nowjava;

import java.util.Collections;
/** 
 来自 时   代     Java  公  众  号 - nowjava.com**/

import java.util.HashMap;

import java.util.Map;


public class Main {

    /**

     * Converts a list of objects [a, 1, b, 2] into a map {a -> 1; b -> 2}

     */

    @SuppressWarnings("unchecked")

    public static <K, V> Map<K, V> asMap(Object... keyValPair) {

        Map<K, V> map = new HashMap<K, V>();


        if (keyValPair.length % 2 != 0) {

            throw new IllegalArgumentException(