JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2006, 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.
 *
 * 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.sun.net.httpserver;
import java.net.*;
import java.io.*;
import java.util.*;
import java.security.Principal;

/**
 * Represents a user authenticated by HTTP Basic or Digest
 * authentication.
 */
@jdk.Exported
public class HttpPrincipal implements Principal {
    private String username, realm;

    /**
     * creates a HttpPrincipal from the given username and realm
     * @param username The name of the user within the realm
     * @param realm The realm.
     * @throws NullPointerException if either username or realm are null
     */
    public HttpPrincipal (String username, String realm) {
        if (username == null || realm == null) {
            throw new NullPointerException();
        }
        this.username = username;
        this.realm = realm;
    }

    /**
     * Compares two HttpPrincipal. Returns <code>true</code>
     * if <i>another</i> is an instance of HttpPrincipal, and its
     * username and realm are equal to this object's username
     * and realm. Returns <code>false</code> otherwise.
     */
    public boolean equals (Object another) {
        if (!(another instanceof HttpPrincipal)) {
            return false;
        }
        HttpPrincipal theother = (HttpPrincipal)another;
        return (username.equals(theother.username) &&
                realm.equals(theother.realm));
    }

    /**
     * returns the contents of this principal in the form
     * <i>realm:username</i>
     */
    public String getName() {
        return username;
    }

    /**
     * returns the username this object was created with.
     */
    public String getUsername() {
        return username;
    }

    /**
     * returns the realm this object was created with.
     */
    public String getRealm() {
        return realm;
    }

    /**

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