Recently, at one of my client’s place, I have to design a screen with lot of ALVs. When I started designing, I didn’t pay much of the attention to the fact that there could be a dependency between main ALVs and other sub-ALVs. Later in the design phase, I understood that this is a great…

The intent behind the Observer Design Pattern is to define a dependecy between objects so that when main object changes its state, all the dependent objects are notified. Its upto the dependent objects to update themselves or ignore the notification. Design time consideration In the main object, AKA Subject, create a Event. Also add create…

Factory Method design pattern could be most used design pattern in the modern world application. Factory method design pattern hides all the complexity of the instantiating an object from the consumer.

Decorator pattern gives us flexibility to extend the behavior of certain objects at runtime.

Continuing exploring the Refactoring assistant, we’ll see how we can use the class association in the refactoring assistant.

While designing the application, there would be lot of instances that we need to move methods, attributes, events or types from a class to another class or an interface. Basically we need to refactor them. But we have to do it manually, it would be too costly and tedeous task when we need to do…