When should you prefer reflection API and when should you avoid it?

The Java Reflection API is a powerful tool that enables runtime inspection and manipulation of classes, methods, fields, and more. However, it should be used judiciously due to its potential drawbacks. Below are some scenarios in which you should prefer using the Reflection API and some situations where you should avoid it.

When to Prefer Reflection API

• Framework Development: Required for libraries like Spring and Hibernate for dependency injection or ORM.
• Dynamic Proxies: Useful for creating dynamic proxies without knowing the classes at compile time.
• Testing: Used in testing frameworks to access private members/methods.

When to Avoid Reflection API

• Performance: Reflection is slower than direct access due to dynamic resolution. Avoid it in performance-critical applications.
• Type Safety: Reflection bypasses compile-time checks, leading to potential runtime errors.
• Complexity: Code readability and maintainability can decrease significantly.

Example of Using Reflection API

import java.lang.reflect.Method;

public class ReflectionExample {
    public static void main(String[] args) {
        try {
            Class> clazz = Class.forName("com.example.MyClass");
            Method method = clazz.getMethod("myMethod");
            method.invoke(clazz.newInstance());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}