That article from Aaron is very good for understanding, also I’d recommend that you read manning publications Spring in Action book, they give very good examples on how the spring solves that problem it will definitely improve your understanding of this. EDIT : I came accross this in this great book called Growing object oriented … Read more
My understanding of consequences of the Law of Demeter seems to be different to DrJokepu’s – whenever I’ve applied it to object oriented code it’s resulted in tighter encapsulation and cohesion, rather than the addition of extra getters to contract paths in procedural code. Wikipedia has the rule as More formally, the Law of Demeter … Read more
Grady Booch in “Object Oriented Analysis and Design”: “The idea of cohesion also comes from structured design. Simply stated, cohesion measures the degree of connectivity among the elements of a single module (and for object-oriented design, a single class or object). The least desirable form of cohesion is coincidental cohesion, in which entirely unrelated abstractions … Read more
Tight coupling is when a group of classes are highly dependent on one another. This scenario arises when a class assumes too many responsibilities, or when one concern is spread over many classes rather than having its own class. Loose coupling is achieved by means of a design that promotes single-responsibility and separation of concerns. … Read more