Wildcards

Working with Java's generics can feel like a puzzle at times, especially when you introduce wildcards into the mix. Wildcards let you write more flexible code, enabling you to handle a wider variety of data types without compromising type safety. They’re like a tool that allows us to say, “I don't care exactly what type you are, as long as you fit into this broader category.”

But just like any powerful tool, using wildcards effectively requires a good understanding of how they function.