JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2006, 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 javax.lang.model.element;

/**
 * An immutable sequence of characters.  When created by the same
 * implementation, objects implementing this interface must obey the
 * general {@linkplain Object#equals equals contract} when compared
 * with each other.  Therefore, {@code Name} objects from the same
 * implementation are usable in collections while {@code Name}s from
 * different implementations may not work properly in collections.
 *
 * <p>An empty {@code Name} has a length of zero.
 *
 * <p>In the context of {@linkplain
 * javax.annotation.processing.ProcessingEnvironment annotation
 * processing}, the guarantees for "the same" implementation must
 * include contexts where the {@linkplain javax.annotation.processing
 * API mediated} side effects of {@linkplain
 * javax.annotation.processing.Processor processors} could be visible
 * to each other, including successive annotation processing
 * {@linkplain javax.annotation.processing.RoundEnvironment rounds}.
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @author Peter von der Ah&eacute;
 * @see javax.lang.model.util.Elements#getName
 * @since 1.6
 */
public interface Name extends CharSequence {
    /**
     * Returns {@code true} if the argument represents the same
     * name as {@code this}, and {@code false} otherwise.
     *
     * <p>Note that the identity of a {@code Name} is a function both
     * of its content in terms of a sequence of characters as well as
     * the implementation which created it.
     *
     * @param obj  the object to be compared with this element
     * @return {@code true} if the specified object represents the same
     *          name as this
     * @see Element#equals
     */
    boolean equals(Object obj);

    /**
     * Obeys the general contract of {@link Object#hashCode Object.hashCode}.
     *
     * @see #equals
     */
    int hashCode();

    /**
     * Compares this name to the specified {@code CharSequence}. The result
     * is {@code true} if and only if this name represents the same sequence

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