Thread in Swing help please

Question

Hey gang, I am relatively new to Java world, and especially to swing and thread. I am trying to build an application with a main dashboard, where the users can click on a button and parse a text file. However, if there were an error in the file, I would like to stop paring the file, but not exit the application once there is an error. I don?t know quite how to stop the process without using System.exit(0); When I use System.exit(0); needless to say my main dashboard exits also, which I want to avoid.
I was told to use threads by my friends, but I trying reading up on SwingWorker class found on the website to help with threads (at least I think so). I am still very lost. If there is any more clarification needed, please let me know

Answer 1

Your problem has nothing to do with threads. As "kulkarni_ash" wrote, you need to surround code which crashes with try{ }catch(Throwable t}{...}. Most runtime problems are reported by throwing an exception, which is understood as "abrubtly abort code execution and gracefully return to closest enclosing catch". There is many exceptions classes, each tided to specific kind of error. Throwable is most general one, and you should not use it usually.
Threads, on other hand are used only, if you expect to have a lot of work to be done and like to have it done "in background" what leaves user interface alive. Example is printing - without thread user interface will freez until last page is printed - with printing thread user may click cancel to abort printing.