Here you can find the source of getSortedTypes(Class>[] types)
private static SortedSet<Class<?>> getSortedTypes(Class<?>[] types)
//package com.java2s; /*/* w w w .j a v a 2 s . com*/ * Copyright Terracotta, Inc. * * 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.Comparator; import java.util.SortedSet; import java.util.TreeSet; import static java.util.Arrays.asList; public class Main { private static final Comparator<Class<?>> CLASS_COMPARATOR = new Comparator<Class<?>>() { public int compare(final Class<?> o1, final Class<?> o2) { return o1.getName().compareTo(o2.getName()); } }; private static SortedSet<Class<?>> getSortedTypes(Class<?>[] types) { final TreeSet<Class<?>> classes = new TreeSet<Class<?>>(CLASS_COMPARATOR); if (types != null) { classes.addAll(asList(types)); } return classes; } }