JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2012, 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.
 *
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package com.sun.security.jgss;

import org.ietf.jgss.*;

/**
 * The extended GSSCredential interface for supporting additional
 * functionalities not defined by {@code org.ietf.jgss.GSSCredential}.
 * @since 1.8
 */
@jdk.Exported
public interface ExtendedGSSCredential extends GSSCredential {
    /**
     * Impersonates a principal. In Kerberos, this can be implemented
     * using the Microsoft S4U2self extension.
     * <p>
     * A {@link GSSException#NO_CRED GSSException.NO_CRED} will be thrown if the
     * impersonation fails. A {@link GSSException#FAILURE GSSException.FAILURE}
     * will be  thrown if the impersonation method is not available to this
     * credential object.
     * @param name the name of the principal to impersonate
     * @return a credential for that principal

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