public DocumentException() 
{
        super("Error occurred in DOM4J application.");
}

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

 public DocumentException(Throwable nestedException) 
{
        super(nestedException.getMessage());
        this.nestedException = nestedException;
}

 public DocumentException(String message,
    Throwable nestedException) 
{
        super(message);
        this.nestedException = nestedException;
}

 public String getMessage() 
{
        if (nestedException != null) {
            return super.getMessage() + " Nested exception: "
                    + nestedException.getMessage();
        } else {
            return super.getMessage();
        }
}

 public Throwable getNestedException() 
{
        return nestedException;
}

 public  void printStackTrace() 
{
        super.printStackTrace();
        if (nestedException != null) {
            System.err.print("Nested exception: ");
            nestedException.printStackTrace();
        }
}

 public  void printStackTrace(PrintStream out) 
{
        super.printStackTrace(out);
        if (nestedException != null) {
            out.println("Nested exception: ");
            nestedException.printStackTrace(out);
        }
}

 public  void printStackTrace(PrintWriter writer) 
{
        super.printStackTrace(writer);
        if (nestedException != null) {
            writer.println("Nested exception: ");
            nestedException.printStackTrace(writer);
        }
}