Error handling is an important feature in any programming language. A good error handling mechanism makes it easier for programmers to write robust applications and prevent bugs from creeping in. Programmers of some languages have to use many if statements to detect all possible conditions that might lead to an error. This could make your code excessively complex. In a larger program, this practice could easily lead to spaghetti like code.
Java has a very nice approach to error handling by using the try statement. With this strategy, part of the code that could potentially lead to an error is isolated in a block. Should an error occur, this error is caught and resolved locally. This chapter teaches you how.