Using Proxy pattern in Java project
Proxy is a structural design pattern that allows you to perform something either before or after the request gets through to the original object.
Assume that we manage a store, when processing an order
if birthday of a user is greater than 2000 and he/she orders Beer products
then we don't process it.
Implementation steps
1. Create Product class
2. Create User class
3. Create IOrderProcessing interface
4. Create OrderProcessing class that implements IOrderProcessing interface
5. Create OrderProxyProcessing class that IOrderProcessing interface
