Java tutorial
/* * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.beans; import java.lang.annotation.*; import static java.lang.annotation.ElementType.*; import static java.lang.annotation.RetentionPolicy.*; /** <p>An annotation on a constructor that shows how the parameters of that constructor correspond to the constructed object's getter methods. For example: <blockquote> <pre> public class Point { @ConstructorProperties({"x", "y"}) public Point(int x, int y) { this.x = x; this.y = y; } public int getX() { return x; } public int getY() { return y; } private final int x, y; } </pre> </blockquote> The annotation shows that the first parameter of the constructor can be retrieved with the {@code getX()} method and the second with the {@code getY()} method. Since parameter names are not in general available at runtime, without the annotation there would be no way to know whether the parameters correspond to {@code getX()} and {@code getY()} or the other way around. @since 1.6 */ @Documented @Target(CONSTRUCTOR) @Retention(RUNTIME) public @interface ConstructorProperties { /** <p>The getter names.</p> @return the getter names corresponding to the parameters in the annotated constructor. */ String[] value(); }