Java tutorial
/* * Copyright 2014 MovingBlocks * * 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. */ package org.terasology.rendering.nui.properties; import com.google.common.collect.Ordering; /** * Provides different {@link java.util.Comparator}s for {@link Property} * @author Martin Steiger */ public final class PropertyOrdering { private PropertyOrdering() { // avoid initialization } public static Ordering<Property<?, ?>> byLabel() { return new Ordering<Property<?, ?>>() { @Override public int compare(Property<?, ?> p1, Property<?, ?> p2) { String o1 = p1.getLabel().getText(); String o2 = p2.getLabel().getText(); if (o1 == null) { return (o2 == null) ? 0 : -1; } if (o2 == null) { return 1; } return o1.compareTo(o2); } }; } }