Let’s look at some of the important refection methods for classes. Package class ConcreteClass extends BaseClass implements BaseInterface In this section, we will look into important methods of Class, for convenience, I am creating some classes and interfaces with inheritance hierarchy. For every type of object, JVM instantiates an immutable instance of that provides methods to examine the runtime properties of the object and create new objects, invoke its method and get/set object fields. is the entry point for all the reflection operations. Primitive types are – boolean, byte, short, int, long, char, float, and double. All the classes, enums, arrays are reference types and inherit from. In java, every object is either a primitive type or reference. High Maintenance – Reflection code is hard to understand and debug, also any issues with the code can’t be found at compile time because the classes might not be available, making it less flexible and hard to maintain.This can be a serious security threat and cause your application to behave abnormally. Security Issues – Using reflection we can access part of code that we are not supposed to access, for example we can access private fields of a class and change it’s value. This can cause you application to fail at runtime because of security manager.
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