001/* 002 * Copyright 2002-2012 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.beans.factory.annotation; 018 019import java.lang.annotation.ElementType; 020import java.lang.annotation.Retention; 021import java.lang.annotation.RetentionPolicy; 022import java.lang.annotation.Target; 023 024/** 025 * Marks a method (typically a JavaBean setter method) as being 'required': that is, 026 * the setter method must be configured to be dependency-injected with a value. 027 * 028 * <p>Please do consult the javadoc for the {@link RequiredAnnotationBeanPostProcessor} 029 * class (which, by default, checks for the presence of this annotation). 030 * 031 * @author Rob Harrop 032 * @since 2.0 033 * @see RequiredAnnotationBeanPostProcessor 034 */ 035@Retention(RetentionPolicy.RUNTIME) 036@Target(ElementType.METHOD) 037public @interface Required { 038 039}