/* * @(#)SamplePrincipal.java	1.4 00/01/11 * * Copyright 2000-2002 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or  * without modification, are permitted provided that the following  * conditions are met: *  * -Redistributions of source code must retain the above copyright   * notice, this  list of conditions and the following disclaimer. *  * -Redistribution in binary form must reproduct the above copyright  * notice, this list of conditions and the following disclaimer in  * the documentation and/or other materials provided with the  * distribution. *  * Neither the name of Sun Microsystems, Inc. or the names of  * contributors may be used to endorse or promote products derived  * from this software without specific prior written permission. *  * This software is provided "AS IS," without a warranty of any  * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY  * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY  * DAMAGES OR LIABILITIES  SUFFERED BY LICENSEE AS A RESULT OF  OR  * RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR  * ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE  * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT,  * SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER  * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF  * THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. *  * You acknowledge that Software is not designed, licensed or  * intended for use in the design, construction, operation or  * maintenance of any nuclear facility.  */package sample.principal;import java.security.Principal;/** * <p> This class implements the <code>Principal</code> interface * and represents a Sample user. * * <p> Principals such as this <code>SamplePrincipal</code> * may be associated with a particular <code>Subject</code> * to augment that <code>Subject</code> with an additional * identity.  Refer to the <code>Subject</code> class for more information * on how to achieve this.  Authorization decisions can then be based upon  * the Principals associated with a <code>Subject</code>. *  * @version 1.4, 01/11/00 * @see java.security.Principal * @see javax.security.auth.Subject */public class SamplePrincipal implements Principal, java.io.Serializable {    /**     * @serial     */    private String name;    /**     * Create a SamplePrincipal with a Sample username.     *     * <p>     *     * @param name the Sample username for this user.     *     * @exception NullPointerException if the <code>name</code>     *			is <code>null</code>.     */    public SamplePrincipal(String name) {	if (name == null)	    throw new NullPointerException("illegal null input");	this.name = name;    }    /**     * Return the Sample username for this <code>SamplePrincipal</code>.     *     * <p>     *     * @return the Sample username for this <code>SamplePrincipal</code>     */    public String getName() {	return name;    }    /**     * Return a string representation of this <code>SamplePrincipal</code>.     *     * <p>     *     * @return a string representation of this <code>SamplePrincipal</code>.     */    public String toString() {	return("SamplePrincipal:  " + name);    }    /**     * Compares the specified Object with this <code>SamplePrincipal</code>     * for equality.  Returns true if the given object is also a     * <code>SamplePrincipal</code> and the two SamplePrincipals     * have the same username.     *     * <p>     *     * @param o Object to be compared for equality with this     *		<code>SamplePrincipal</code>.     *     * @return true if the specified Object is equal equal to this     *		<code>SamplePrincipal</code>.     */    public boolean equals(Object o) {	if (o == null)	    return false;        if (this == o)            return true;         if (!(o instanceof SamplePrincipal))            return false;        SamplePrincipal that = (SamplePrincipal)o;	if (this.getName().equals(that.getName()))	    return true;	return false;    }     /**     * Return a hash code for this <code>SamplePrincipal</code>.     *     * <p>     *     * @return a hash code for this <code>SamplePrincipal</code>.     */    public int hashCode() {	return name.hashCode();    }}