OOP can seem a bit abstract at first, but once you get the hang of it, it’ll change the way you write code. It’s all about ...

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

A PriorityQueue is a list that always keeps its items sorted based on some rule, like smallest to largest. So, when you take an item out, you always get the one with the highest (or lowest) priority.