JDK14/Java14源码在线阅读

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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 * 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).
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/**
 * This package contains utility classes related to the Kerberos network
 * authentication protocol. They do not provide much Kerberos support
 * themselves.<p>
 *
 * The Kerberos network authentication protocol is defined in
 * <a href=http://www.ietf.org/rfc/rfc4120.txt>RFC 4120</a>. The Java
 * platform contains support for the client side of Kerberos via the
 * {@link org.ietf.jgss} package. There might also be
 * a login module that implements
 * {@link javax.security.auth.spi.LoginModule LoginModule} to authenticate
 * Kerberos principals.<p>
 *
 * You can provide the name of your default realm and Key Distribution
 * Center (KDC) host for that realm using the system properties
 * {@systemProperty java.security.krb5.realm} and
 * {@systemProperty java.security.krb5.kdc}. Both properties must be set.
 * Alternatively, the {@systemProperty java.security.krb5.conf} system property
 * can be set to the location of an MIT style {@code krb5.conf} configuration
 * file. If none of these system properties are set, the {@code krb5.conf}
 * file is searched for in an implementation-specific manner. Typically,
 * an implementation will first look for a {@code krb5.conf} file in
 * {@code <java-home>/conf/security} and failing that, in an OS-specific
 * location.<p>
 *
 * The {@code krb5.conf} file is formatted in the Windows INI file style,

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