JDK8/Java8源码在线阅读

/*
 * Copyright (c) 1996, 1997, 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
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package java.beans;

/**
 * A VetoableChange event gets fired whenever a bean changes a "constrained"
 * property.  You can register a VetoableChangeListener with a source bean
 * so as to be notified of any constrained property updates.
 */
public interface VetoableChangeListener extends java.util.EventListener {
    /**
     * This method gets called when a constrained property is changed.
     *
     * @param     evt a <code>PropertyChangeEvent</code> object describing the
     *                event source and the property that has changed.

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