The relationship between classes and classes--java

The relationship between classes (objects) 1, inheritance relationships C + + has multiple inheritance mechanisms. If you have a member variable of the same name in the two parent class of a class, it is more difficult to handle.     2. Realization relationship (class and Interface, polymorphic) 3, association relationship is the weakest relationship.     An association relationship is an object in a class that has another class in its method. Life Example: Professor of Graduate school teaching method is teaching, the parameters are graduate students.     4, the aggregation relationship is divided into aggregation and combination. Gather: Team leader team: Person Limb head Body

The relationship between classes and classes--java