Java tutorial
/* * This file is part of Sponge, licensed under the MIT License (MIT). * * Copyright (c) SpongePowered.org <http://www.spongepowered.org> * Copyright (c) contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package org.spongepowered.api.util.rotation; import com.google.common.base.Optional; import java.util.List; /** * An enumeration of possible rotations for something that can rotate, * such as an {@link org.spongepowered.api.item.inventory.ItemStack} within * an {@link org.spongepowered.api.entity.hanging.ItemFrame}. */ public final class Rotations { private Rotations() { } public static final Rotation TOP = null; public static final Rotation TOP_RIGHT = null; public static final Rotation RIGHT = null; public static final Rotation BOTTOM_RIGHT = null; public static final Rotation BOTTOM = null; public static final Rotation BOTTOM_LEFT = null; public static final Rotation LEFT = null; public static final Rotation TOP_LEFT = null; public static List<Rotation> getValues() { return null; } public static Optional<Rotation> getRotationForDegree(int degrees) { return Optional.absent(); } }