Generic Methods and Type Bounds
Explore how to declare generic methods with type parameters, apply upper and multiple bounds for type safety, and leverage Java's type inference. This lesson helps you write reusable and safe code that operates on diverse data types, enhancing your expertise in Java generics.
We have already seen how to define entire classes that operate on generic types. However, sometimes we need more granular control. We might need a single method to handle different types independently of the class it belongs to, or we might be writing a static utility method where class-level type parameters simply do not apply.
Java allows us to define generic methods, giving us the ability to parameterize individual behaviors. In this lesson, we will learn how to declare these methods, restrict the types they accept using bounds, and rely on the compiler to infer types automatically.
Defining generic methods
A generic method defines its own type parameter, which is limited to that method’s scope. This is particularly useful for static methods, which cannot access the type parameters of their enclosing class, or for instance methods that need to handle types different from the class’s main type.
To declare a generic method, we place ...