The Java Reflection API is a set of classes and interfaces that provide a way to examine the runtime behavior of applications written in the Java programming language. It allows developers to inspect, modify, and interact with the classes, interfaces, constructors, methods, and fields at runtime.
For example, the Java Reflection API can be used to instantiate objects, invoke methods, and get and set field values even if the names of the classes, methods, and fields are not known at compile time. It can also be used to determine the superclass of a class, and the interfaces that a class implements.