/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. *//* * Created by IntelliJ IDEA. * User: plightbo * Date: Apr 29, 2002 * Time: 10:46:56 PM */package com.opensymphony.workflow;import java.io.PrintStream;import java.io.PrintWriter;/** * A runtime exceptiont that singals a serious and unexpected error in OSWorkflow. * * @author <a href="mailto:plightbo@hotmail.com">Pat Lightbody</a> */public class InternalWorkflowException extends RuntimeException {    //~ Instance fields ////////////////////////////////////////////////////////    private Throwable rootCause;    //~ Constructors ///////////////////////////////////////////////////////////    public InternalWorkflowException() {    }    public InternalWorkflowException(String s) {        super(s);    }    public InternalWorkflowException(String s, Throwable rootCause) {        super(s);        this.rootCause = rootCause;    }    public InternalWorkflowException(Throwable rootCause) {        this.rootCause = rootCause;    }    //~ Methods ////////////////////////////////////////////////////////////////    public Throwable getRootCause() {        return rootCause;    }    public void printStackTrace() {        super.printStackTrace();        if (rootCause != null) {            synchronized (System.err) {                System.err.println("\nRoot cause:");                rootCause.printStackTrace();            }        }    }    public void printStackTrace(PrintStream s) {        super.printStackTrace(s);        if (rootCause != null) {            synchronized (s) {                s.println("\nRoot cause:");                rootCause.printStackTrace(s);            }        }    }    public void printStackTrace(PrintWriter s) {        super.printStackTrace(s);        if (rootCause != null) {            synchronized (s) {                s.println("\nRoot cause:");                rootCause.printStackTrace(s);            }        }    }}