Logging stack trace

[Mikael Månsson]

Hi

I am using the standard java logger, and i'm wondering about stack traces.

Normally, not using a logger, i would propagate all lower level exceptions as higher level exceptions up to the last place, the gui, and there I would present the user with an understandable error message. At the same time, for debugging, i would want to call the printstacktrace method on the exception so that I can see in what file and what line the exception occured.

Now, when I am using the logger, I would want to log both the message from the error and the stack trace for the same kind of tracability, but i don't find any simple way of doing this, is this not a common thing to do?

// problem here
throw new LowerLevelException("description");

// do your thing
catch (LowerLevelException e) {
	throw new HigerLevelException("description", e);
}

// gui
catch (HigherLevelException e) {
	// show user error message here
	// now log the error, and stack trace?? how?
}

[Roel De Nijs]

Hi Mikael,

Logging is not a requirement, so I didn't logged any error. The only logging is used was some helpful debug information (parameters and return value of each method from the Data class and my business service).

To show the user a message I used this code:

    public static void showErrorMessage(final String message) {
        JOptionPane.showMessageDialog(null, message,
                Messages.ERROR_DIALOG_TITLE, JOptionPane.ERROR_MESSAGE);
    }

And maybe this link can help you to log an exception using JUL.

Kind regards,
Roel