| /* |
| * 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.commons.collections4; |
| |
| /** |
| * Defines a functor interface implemented by classes that create objects. |
| * <p> |
| * A {@code Factory} creates an object without using an input parameter. |
| * If an input parameter is required, then {@link Transformer} is more appropriate. |
| * </p> |
| * <p> |
| * Standard implementations of common factories are provided by |
| * {@link FactoryUtils}. These include factories that return a constant, |
| * a copy of a prototype or a new instance. |
| * </p> |
| * |
| * @param <T> the type that the factory creates |
| * |
| * @since 2.1 |
| */ |
| @FunctionalInterface |
| public interface Factory<T> { |
| |
| /** |
| * Create a new object. |
| * |
| * @return a new object |
| * @throws FunctorException (runtime) if the factory cannot create an object |
| */ |
| T create(); |
| |
| } |