Java examples for Reflection:Property
Returns a event set descriptor for the class that matches the property name.
/*//from www . j a va 2 s .c om * Copyright (c) 2003, 2008, 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. * * 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 com.java2s; import java.beans.EventSetDescriptor; import java.beans.IntrospectionException; import java.beans.Introspector; public class Main { /** * Returns a event set descriptor for the class * that matches the property name. * * @param type the class to introspect * @param name the name of the event set to search * @return the {@code EventSetDescriptor} */ public static EventSetDescriptor getEventSetDescriptor(Class type, String name) { EventSetDescriptor esd = findEventSetDescriptor(type, name); if (esd != null) { return esd; } throw new Error("could not find event set '" + name + "' in " + type); } /** * Finds an event set descriptor for the class * that matches the event set name. * * @param type the class to introspect * @param name the name of the event set to search * @return the {@code EventSetDescriptor} or {@code null} */ public static EventSetDescriptor findEventSetDescriptor(Class type, String name) { EventSetDescriptor[] esds = getEventSetDescriptors(type); for (EventSetDescriptor esd : esds) { if (esd.getName().equals(name)) { return esd; } } return null; } /** * Returns an array of event set descriptors for specified class. * * @param type the class to introspect * @return an array of event set descriptors */ public static EventSetDescriptor[] getEventSetDescriptors(Class type) { try { return Introspector.getBeanInfo(type).getEventSetDescriptors(); } catch (IntrospectionException exception) { throw new Error("unexpected exception", exception); } } }