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package javax.servlet;


Defines a general exception a servlet can throw when it
encounters difficulty.
Author:
	Various/**
 * Defines a general exception a servlet can throw when it
 * encounters difficulty.
 *
 * @author 	Various
 */


public class ServletException extends Exception {

    private Throwable rootCause;





    
Constructs a new servlet exception.
/**
     * Constructs a new servlet exception.
     *
     */

    public ServletException() {
	super();
    }
    
   

    

    
Constructs a new servlet exception with the
specified message. The message can be written 
to the server log and/or displayed for the user. 
Params:
message – 		a String 
			specifying the text of 
			the exception message/**
     * Constructs a new servlet exception with the
     * specified message. The message can be written 
     * to the server log and/or displayed for the user. 
     *
     * @param message 		a <code>String</code> 
     *				specifying the text of 
     *				the exception message
     *
     */

    public ServletException(String message) {
	super(message);
    }
    
   
   
    

    
Constructs a new servlet exception when the servlet 
needs to throw an exception and include a message 
about the "root cause" exception that interfered with its 
normal operation, including a description message.
Params:
message – 		a String containing 
			the text of the exception message
rootCause – 		the Throwable exception 
			that interfered with the servlet's
			normal operation, making this servlet
			exception necessary/**
     * Constructs a new servlet exception when the servlet 
     * needs to throw an exception and include a message 
     * about the "root cause" exception that interfered with its 
     * normal operation, including a description message.
     *
     *
     * @param message 		a <code>String</code> containing 
     *				the text of the exception message
     *
     * @param rootCause		the <code>Throwable</code> exception 
     *				that interfered with the servlet's
     *				normal operation, making this servlet
     *				exception necessary
     *
     */
    
    public ServletException(String message, Throwable rootCause) {
	super(message, rootCause);
	this.rootCause = rootCause;
    }





    
Constructs a new servlet exception when the servlet 
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation.  The exception's message is based on the localized
message of the underlying exception.
This method calls the getLocalizedMessage method
on the Throwable exception to get a localized exception
message. When subclassing ServletException, 
this method can be overridden to create an exception message 
designed for a specific locale.
Params:
rootCause – 	the Throwable exception
				that interfered with the servlet's
			normal operation, making the servlet exception
			necessary/**
     * Constructs a new servlet exception when the servlet 
     * needs to throw an exception and include a message
     * about the "root cause" exception that interfered with its
     * normal operation.  The exception's message is based on the localized
     * message of the underlying exception.
     *
     * <p>This method calls the <code>getLocalizedMessage</code> method
     * on the <code>Throwable</code> exception to get a localized exception
     * message. When subclassing <code>ServletException</code>, 
     * this method can be overridden to create an exception message 
     * designed for a specific locale.
     *
     * @param rootCause 	the <code>Throwable</code> exception
     * 				that interfered with the servlet's
     *				normal operation, making the servlet exception
     *				necessary
     *
     */

    public ServletException(Throwable rootCause) {
	super(rootCause);
	this.rootCause = rootCause;
    }
  
  
 
 
    
    
Returns the exception that caused this servlet exception.
Returns:
			the Throwable 
			that caused this servlet exception/**
     * Returns the exception that caused this servlet exception.
     *
     *
     * @return			the <code>Throwable</code> 
     *				that caused this servlet exception
     *
     */
    
    public Throwable getRootCause() {
	return rootCause;
    }
}