December 2024
Beginner
208 pages
3h 46m
English
Content preview from Java Essentials For Dummies
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Chapter 9
Handling Exceptions
IN THIS CHAPTER
Seeing what to do when bad things happen to good programs
Finding out all about exceptions
Using try, catch, and finally
This chapter is about what happens when Java encounters an error situation that it can’t deal with. Being an object-oriented programming language, Java handles errors by using special exception objects that are created when an error occurs. In addition, Java has a special statement called the try statement that you must use to deal with exception objects. In this chapter, you find all the gory details of working with exception objects and try statements.
Understanding Exceptions
An exception is an object that’s created when an error occurs in a Java program and Java can’t automatically fix the error. The exception object contains information about the type of error that occurred. The most important information — the cause of the error — is indicated by the name of the exception class used to create the exception. You usually don’t have to do anything with an exception object other than figure out which one you have.
Each type of exception that can occur is represented by a different exception class. Here are some ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.