Java tutorial
/**************************************************************** * Licensed to the Apache Software Foundation (ASF) under one * * or more contributor license agreements. See the NOTICE file * * distributed with this work for additional information * * regarding copyright ownership. The ASF licenses this file * * to you 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.apache.james.utils; import java.util.Set; import org.apache.james.lifecycle.api.Configurable; import com.google.common.collect.ImmutableSet; import com.google.common.collect.Sets; public class Configurables { private final Set<Class<? extends Configurable>> configurables; public Configurables() { this.configurables = Sets.newLinkedHashSet(); } public void add(Class<? extends Configurable> configurable) { configurables.add(configurable); } public Set<Class<? extends Configurable>> get() { return ImmutableSet.copyOf(configurables); } }