Strategy is one of the patterns included in the influential book Design Patterns by Gamma et al.that popularized the concept of using design patterns to describe how to design flexible and reusable object-oriented software.This can be achieved by mechanisms such as the native function pointer, the first-class function, classes or class instances in object-oriented programming languages, or accessing the language implementation's internal storage of code via reflection.According to the strategy pattern, the behaviors of a class should not be inherited.If the user clicks the Cancel button, the program simply closes the form without validating the fields.
Unfortunately this method has a couple of drawbacks.
Insert address searching fields Input and output fields are the basis of address searching and validation.
Address information is provided by the user via input fields, passed to Address Validation and then displayed via the output fields for confirmation.
Exceptions should not be thrown under normal, expected circumstances.
Sometimes you’ll find a method that looks like this: This is wrong!