Java tutorial
//package com.java2s; /* This file is part of the InternalPluginManager. * * Copyright (C) 2014-2015 Fabian Damken * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.lang.reflect.Modifier; import java.util.Set; public class Main { /** * Converts the given array to a set with the given type. Works like * {@link Arrays#asList(Object...)}. * * @param <T> * The type of the set values. * @param setType * The set type to return. * @param arr * The array to convert into a set. * @return An object of the given set or, if, and only if, an error * occurred, <code>null</code>. */ @SuppressWarnings("unchecked") public static <T> Set<T> toSet(@SuppressWarnings("rawtypes") final Class<? extends Set> setType, final T... arr) { assert setType != null : "SetType cannot be null!"; assert !Modifier.isAbstract(setType.getModifiers()) : "SetType cannot be abstract!"; assert !setType.isInterface() : "SetType cannot be an interface!"; assert arr != null : "Arr cannot be null!"; Set<T> result = null; try { result = setType.newInstance(); for (final T t : arr) { result.add(t); } } catch (final InstantiationException ex) { ex.printStackTrace(); } catch (final IllegalAccessException ex) { ex.printStackTrace(); } return result; } }