In an ideal world, nothing bad ever happens when an application runs. For example, a file always exists when the application needs to open the file, the application is always able to connect to a remote computer, and the Java Virtual Machine (JVM) never runs out of memory when the application needs to instantiate objects.
In contrast, real-world applications occasionally attempt to open files that do not exist, attempt to connect to remote computers that are unable to communicate with them, and require more memory than ...
