Prefer Composition over Inheritance

Inheritance is a powerful feature, but it is designed to create a hierarchy of objects with the is-a relationship.

Inheritance is a powerful feature, but it is designed to create a hierarchy of objects with the is-a relationship. When such a relationship is not clear, inheritance might be problematic and dangerous. When all we need is a simple code extraction or reuse, inheritance should be used with caution, and we should instead prefer a lighter alternative: class…