Earning this certificate helps Java developers increase the security of their software and reduce vulnerabilities in the programs they develop.

The pattern matching feature in Java lets app developers handle complex data structures such as abstract layers and class hierarchies. Here's how it works.

Take advantage of the Singleton design pattern to create classes that can have only one instance throughout the lifetime of the application ...

Although the Singleton design pattern—as evidenced below by the figure below—is one of the simplest design patterns, it presents a number of pitfalls for the unwary Java developer.