composição

I have read in several articles and books of Designer patterns the expression Prefira composição em vez de herança. I believe ... ecify a right time to use them? Following the opinion of the title, the best combination would be composition + interface ?

I was reading this article today and came across the following statement: "inheritance refers to the ability of an obje ... object of another class is instantiated within the parent object's own class), right? Can anyone supplement this statement?

I was searching the internet and saw this way of making association between Java classes. Is it correct to make this type of ... private Time horaAula; } public class Materia { private int codigo; private List<AlunoMateria> alunos; }

How do you normally model a role (role) in object orientation? Is by means of a composition, correct? For example, to model ... y problem is Cliente having a Pessoa and not the other way around... at least the opposite is not necessary at first. empty .

I have some doubts in this composition between ClienteJuridico and ClienteFisico with NotaFiscal. I gave a survey and saw tha ... ther, in case it would be the composition, but how could I inherit the attributes of these classes in the Class NotaFiscal?