Re: Need help with inheritance
Post code using CODE tags (see my sig) so it is readable.
Post the full error message text of any errors you are getting.
Post all the relevant code - I don't see any mention of BufferedImage in the code you posted. If KernelHandler extends ImageHandler, what makes you think it should have a getWidth() method?
A prudent question is one-half of wisdom...
Please use [CODE]...your code here...[/CODE] tags when posting code. If you get an error, please post the full error message and stack trace, if present.