apache-poi/src/java/org/apache/poi/hssf/eventusermodel/HSSFUserException.java

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package org.apache.poi.hssf.eventusermodel;

/**
 * <p>This exception is provided as a way for API users to throw 
 * exceptions from their event handling code. By doing so they
 * abort file processing by the HSSFEventFactory and by
 * catching it from outside the HSSFEventFactory.processEvents 
 * method they can diagnose the cause for the abort.</p>
 *
 * <p>The HSSFUserException supports a nested "reason"
 * throwable, i.e. an exception that caused this one to be thrown.</p>
 *
 * <p>The HSSF package does not itself throw any of these 
 * exceptions.</p>
 *
 * @author Rainer Klute (klute@rainer-klute.de)
 * @author Carey Sublette (careysub@earthling.net)
 * @version HSSFUserException.java,v 1.0
 * @since 2002-04-19
 */
public class HSSFUserException extends Exception
{

    private Throwable reason;



    /**
     * <p>Creates a new {@link HSSFUserException}.</p>
     */
    public HSSFUserException()
    {
        super();
    }



    /**
     * <p>Creates a new {@link HSSFUserException} with a message
     * string.</p>
     */
    public HSSFUserException(final String msg)
    {
        super(msg);
    }



    /**
     * <p>Creates a new {@link HSSFUserException} with a reason.</p>
     */
    public HSSFUserException(final Throwable reason)
    {
        super();
        this.reason = reason;
    }



    /**
     * <p>Creates a new {@link HSSFUserException} with a message string
     * and a reason.</p>
     */
    public HSSFUserException(final String msg, final Throwable reason)
    {
        super(msg);
        this.reason = reason;
    }



    /**
     * <p>Returns the {@link Throwable} that caused this exception to
     * be thrown or <code>null</code> if there was no such {@link
     * Throwable}.</p>
     */
    public Throwable getReason()
    {
        return reason;
    }

}