/* * Copyright (c) 1999, 2003, 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.security.auth.callback; /** * <p> Underlying security services instantiate and pass a * <code>NameCallback</code> to the <code>handle</code> * method of a <code>CallbackHandler</code> to retrieve name information. * * @see javax.security.auth.callback.CallbackHandler */public class NameCallback implements Callback, java.io.Serializable {     private static final long serialVersionUID = 3770938795909392253L;     /**     * @serial     * @since 1.4     */    private String prompt;    /**     * @serial     * @since 1.4     */    private String defaultName;    /**     * @serial     * @since 1.4     */    private String inputName;     /**     * Construct a <code>NameCallback</code> with a prompt.     *     * <p>     *     * @param prompt the prompt used to request the name.     *     * @exception IllegalArgumentException if <code>prompt</code> is null     *                  or if <code>prompt</code> has a length of 0.     */    public NameCallback(String prompt) {        if (prompt == null || prompt.length() == 0)            throw new IllegalArgumentException();        this.prompt = prompt;    }     /**     * Construct a <code>NameCallback</code> with a prompt     * and default name.     *     * <p>     *     * @param prompt the prompt used to request the information. <p>     *     * @param defaultName the name to be used as the default name displayed     *                  with the prompt.     *     * @exception IllegalArgumentException if <code>prompt</code> is null,     *                  if <code>prompt</code> has a length of 0,     *                  if <code>defaultName</code> is null,     *                  or if <code>defaultName</code> has a length of 0.     */    public NameCallback(String prompt, String defaultName) {        if (prompt == null || prompt.length() == 0 ||            defaultName == null || defaultName.length() == 0)            throw new IllegalArgumentException();         this.prompt = prompt;        this.defaultName = defaultName;    }     /**     * Get the prompt.     *     * <p>     *     * @return the prompt.     */    public String getPrompt() {        return prompt;    }     /**     * Get the default name.     *     * <p>     *     * @return the default name, or null if this <code>NameCallback</code>     *          was not instantiated with a <code>defaultName</code>.     */    public String getDefaultName() {        return defaultName;    }     /**     * Set the retrieved name.     *     * <p>     *     * @param name the retrieved name (which may be null).     *     * @see #getName     */    public void setName(String name) {        this.inputName = name;    }     /**     * Get the retrieved name.     *     * <p>     *     * @return the retrieved name (which may be null)     *     * @see #setName     */    public String getName() {        return inputName;    }}