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package javax.security.auth.callback;

 Underlying security services instantiate and pass a TextOutputCallback to the handle method of a CallbackHandler to display information messages, warning messages and error messages. 
See Also:
CallbackHandler
Since:
1.4/**
 * <p> Underlying security services instantiate and pass a
 * {@code TextOutputCallback} to the {@code handle}
 * method of a {@code CallbackHandler} to display information messages,
 * warning messages and error messages.
 *
 * @since 1.4
 * @see javax.security.auth.callback.CallbackHandler
 */
public class TextOutputCallback implements Callback, java.io.Serializable {

    private static final long serialVersionUID = 1689502495511663102L;

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

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

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

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

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

    
Get the message to be displayed.
Returns:
the message to be displayed./**
     * Get the message to be displayed.
     *
     * @return the message to be displayed.
     */
    public String getMessage() {
        return message;
    }
}