Solutions

The following sections describe solutions to each of the preceding problems. Remember that there usually isn't a single correct way to solve a particular problem. Also, remember that the explanations shown here include only the most interesting and important details needed to solve the problems. Download the example solutions to see additional details and to experiment with the programs at https://github.com/PacktPublishing/Java-Coding-Problems.

40. Checking null references in functional style and imperative code

Independent of functional style or imperative code, checking null references is a common and recommended technique used for mitigating the occurrence of famous NullPointerException exception. This kind...