Here you can find the source of createCollection(T... items)
public static <T> Collection<T> createCollection(T... items)
//package com.java2s; /*/* ww w . j a va 2s . c o m*/ * Copyright (c) 2010-2013 Evolveum * * 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.ArrayList; import java.util.Collection; public class Main { public static <T> Collection<T> createCollection(T... items) { Collection<T> collection = new ArrayList<T>(items.length); for (T item : items) { collection.add(item); } return collection; } }