There are several reasons why it may be necessary to use a proxy class in Java:
Remote method invocation: When working with distributed systems, proxy classes can be used to invoke methods on remote objects.
Security: Proxy classes can be used to provide additional security by acting as a filter between the client and server. They can also be used to authenticate users before allowing access to certain resources.
Performance optimization: Proxy classes can be used to cache results of expensive operations, reducing the number of times that the operation needs to be performed.
Dynamic class loading: Proxy classes can be dynamically loaded at runtime, allowing for greater flexibility in program design.
Object-oriented programming: Proxy classes can be used to implement object-oriented design patterns such as the Decorator pattern or the Adapter pattern.




