Android How to Program, 3/e

H.8 Wrap-Up

In this appendix, you learned how to use exception handling to deal with errors. You learned that exception handling enables you to remove error-handling code from the “main line” of the program’s execution. We showed how to use try blocks to enclose code that may throw an exception, and how to use catch blocks to deal with exceptions that may arise. You learned about the termination model of exception handling, which dictates that after an exception is handled, program control does not return to the throw point. We discussed checked vs. unchecked exceptions, and how to specify with the throws clause the exceptions that a method might throw. You learned how to use the finally block to release resources whether or not an exception ...