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JDK 1.6
  javax.security.auth.callback. TextOutputCallback View Javadoc
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/*
 * @(#)TextOutputCallback.java	1.16 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.security.auth.callback;

/**
 * <p> Underlying security services instantiate and pass a
 * <code>TextOutputCallback</code> to the <code>handle</code>
 * method of a <code>CallbackHandler</code> to display information messages,
 * warning messages and error messages.
 *
 * @version 1.16, 11/17/05
 * @see javax.security.auth.callback.CallbackHandler
 */
public class TextOutputCallback implements Callback, java.io.Serializable {

    private static final long serialVersionUID = 1689502495511663102L;

    /** Information message. */
    public static final int INFORMATION		= 0;
    /** Warning message. */
    public static final int WARNING		= 1;
    /** Error message. */
    public static final int ERROR		= 2;

    /**
     * @serial
     * @since 1.4
     */
    private int messageType;
    /**
     * @serial
     * @since 1.4
     */
    private String message;

    /**
     * Construct a TextOutputCallback with a message type and message
     * to be displayed.
     *
     * <p>
     *
     * @param messageType the message type (<code>INFORMATION</code>,
     *			<code>WARNING</code> or <code>ERROR</code>). <p>
     *
     * @param message the message to be displayed. <p>
     *
     * @exception IllegalArgumentException if <code>messageType</code>
     *			is not either <code>INFORMATION</code>,
     *			<code>WARNING</code> or <code>ERROR</code>,
     *			if <code>message</code> is null,
     *			or if <code>message</code> has a length of 0.
     */
    public TextOutputCallback(int messageType, String message) {
	if ((messageType != INFORMATION &&
		messageType != WARNING && messageType != ERROR) ||
	    message == null || message.length() == 0)
	    throw new IllegalArgumentException();

	this.messageType = messageType;
	this.message = message;
    }

    /**
     * Get the message type.
     *
     * <p>
     *
     * @return the message type (<code>INFORMATION</code>,
     *			<code>WARNING</code> or <code>ERROR</code>).
     */
    public int getMessageType() {
	return messageType;
    }

    /**
     * Get the message to be displayed.
     *
     * <p>
     *
     * @return the message to be displayed.
     */
    public String getMessage() {
	return message;
    }
}

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