Here you can find the source of map(K key, V value, Object... moreKeysAndValues)
public static <K, V> Map<K, V> map(K key, V value, Object... moreKeysAndValues)
//package com.java2s; /*/*from w ww .j a v a 2s . c o m*/ * Copyright 2017 Google LLC * * 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.HashMap; import java.util.Map; public class Main { public static <K, V> Map<K, V> map(K key, V value, Object... moreKeysAndValues) { Map<K, V> map = new HashMap<>(); map.put(key, value); for (int i = 0; i < moreKeysAndValues.length; i += 2) { map.put((K) moreKeysAndValues[i], (V) moreKeysAndValues[i + 1]); } return map; } public static Map<String, Object> map() { return new HashMap<>(); } }