Exceptions in Java
		Exceptions allow you to work with problems that arise when your software runs. They allow you to save work in progress, notify the user, and perhaps give the user a second chance. Not all exceptions are user-generated. Some can come from poor programming - let's try to avoid these. Others may come from the system.  Network failure or losing an FTP connection, for instance.  In this case, you can sometimes set up a recursive retry algorythm. And yes, many do come from the user. Java's error trapping system is called exception handling.