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package Torello.HTML;

/**
 * If a programmer is writing code, and expecting an HTML-Page {@code Vector} position to contain a
 * specific type of {@code HTMLNode}, and it is not found anywhere on that page, sub-page or
 * sub-section, then this exception may be used.
 *
 * <BR /><BR /><B CLASS=JDDescLabel>For Instance:</B>
 * 
 * <BR />When attempting to insert a {@code favicon} image into a Vectorized-HTML page, first, the 
 * page's {@code header} section must be found.  This is to make sure that the favicon {@code URL}
 * is inserted into the appropriate location on the page, so as not to confuse a web-browser.
 * 
 * <BR /><BR /><I>If that page is lacking an HTML {@code <HEAD>} section</I> then throwing a
 * {@code NodeNotFoundException} is appropriate.
 */
public class NodeNotFoundException extends NodeExpectedException
{
    /** <EMBED CLASS='external-html' DATA-FILE-ID=SVUIDEX> */
    public static final long serialVersionUID = 1;

    /** Constructs a {@code NodeNotFoundException} with no detail message. */
    public NodeNotFoundException()
    { super(); }

    /**
     * Constructs a {@code NodeNotFoundException} with the specified detail message.
     * @param message the detail message.
     */
    public NodeNotFoundException(String message)
    { super(message); }

    /**
     * Constructs a new exception with the specified detail message and cause.
     * 
     * <BR /><BR /><DIV CLASS=JDHint>
     * <B STYLE='color:red;'>Note:</B> The detail message associated with cause is not
     * automatically incorporated into this exception's detail message.
     * </DIV>
     * 
     * @param message The detail message (which is saved for later retrieval by the
     * {@code Throwable.getMessage()} method).
     * 
     * @param cause the cause (which is saved for later retrieval by the {@code Throwable.getCause()}
     * method).  (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
     */
    public NodeNotFoundException(String message, Throwable cause)
    { super(message, cause); }

    /**
     * Constructs a new exception with the specified cause and a detail message of
     * {@code (cause==null ? null : cause.toString())} (which typically contains the class and
     * detail message of cause).
     * 
     * <BR /><BR /> This constructor is useful for exceptions that are little more than wrappers
     * for other throwables.
     * 
     * @param cause The cause (which is saved for later retrieval by the {@code Throwable.getCause()}
     * method).  (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
     */
    public NodeNotFoundException(Throwable cause)
    { super(cause); }
}