Module 10 - Code Reuse, Making Changes in Class Hierarchy

Code reuse

is the practice of using existing code to develop new applications

Code reuse

It is a fundamental principle of software engineering that allows developers to save time and effort by leveraging existing code libraries, frameworks, and modules

Inheritance

is a mechanism that allows a class to inherit properties and methods from another class

Composition

is a mechanism that allows a class to contain instances of other classes as members

Delegation

is a mechanism that allows a class to delegate responsibility for a task to another class

"is-a" relationship

term used to describe the relationship between two classes

"is-a" relationship

is important in Java because it allows developers to reuse code and create more efficient and flexible programs

Has-A-Relation

is a type of relationship between classes, which is used to define the ownership of one object by another object

Composition

is a strong form of the Has-ARelation

Aggregation

is a type of relationship between two classes where one class, the aggregate class, has a reference to the other class, the part class

Delegation

is a mechanism that allows a class to delegate responsibility for a task to another class

Delegation

is useful when creating classes that have a single responsibility and collaborate with other classes to achieve that responsibility