Here you can find the source of copyMap(Map
public static <K, V> Map<K, V> copyMap(Map<K, V> m)
//package com.java2s; /**/* w w w . jav a2 s . c o m*/ * * Copyright 2014 The Darks ORM Project (Liu lihua) * * 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> copyMap(Map<K, V> m) { return new HashMap<K, V>(m); } }