Java tutorial
//package com.java2s; /* * This file is part of McIDAS-V * * Copyright 2007-2015 * Space Science and Engineering Center (SSEC) * University of Wisconsin - Madison * 1225 W. Dayton Street, Madison, WI 53706, USA * http://www.ssec.wisc.edu/mcidas * * All Rights Reserved * * McIDAS-V is built on Unidata's IDV and SSEC's VisAD libraries, and * some McIDAS-V source code is based on IDV and VisAD source code. * * McIDAS-V is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * McIDAS-V is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser Public License for more details. * * You should have received a copy of the GNU Lesser Public License * along with this program. If not, see http://www.gnu.org/licenses. */ import java.util.Collection; import java.util.LinkedHashSet; import java.util.Set; public class Main { /** * Creates an empty {@link LinkedHashSet} that uses a little cleverness * with Java's generics. Useful for eliminating redundant type * information and declaring fields as {@code final}. * * <p>Please consider using {@link #newLinkedHashSet(int)} or * {@link #newLinkedHashSet(java.util.Collection)} instead of this method. * * @return A new, empty {@code LinkedHashSet}. * * @see #newLinkedHashSet(int) * @see #newLinkedHashSet(java.util.Collection) */ @SuppressWarnings({ "CollectionWithoutInitialCapacity" }) public static <E> Set<E> newLinkedHashSet() { return new LinkedHashSet<>(); } /** * Creates an empty {@link LinkedHashSet} with a given initial capacity. * * @param initialCapacity Initial capacity of the {@code LinkedHashSet}. * Cannot be negative. * * @return A new, empty {@code LinkedHashSet} with the given initial * capacity. */ public static <E> Set<E> newLinkedHashSet(int initialCapacity) { return new LinkedHashSet<>(initialCapacity); } /** * Copies a {@link Collection} into a new {@link LinkedHashSet}. * * @param original Collection to be copied. Cannot be {@code null}. * * @return A new {@code LinkedHashSet} whose contents are the same as * {@code original}. */ public static <E> Set<E> newLinkedHashSet(Collection<E> original) { return new LinkedHashSet<>(original); } }