TAILIEUCHUNG - Java C4. OOP Application

Mechanism to create new classes using existing classes The existing class is called the parent class, or superclass, or base class The derived class is called the child class or subclass As the name implies, the child inherits characteristics of the parent That is, the child class inherits the methods and data defined by the parent class. Once a behavior (method) is defined in a super class, that behavior is automatically inherited by all subclasses | Chapter 4. OOP Application ITSS Java Programming CAO Tuan-Dung, HUT Inheritance Mechanism to create new classes using existing classes The existing class is called the parent class, or superclass, or base class The derived class is called the child class or subclass As the name implies, the child inherits characteristics of the parent That is, the child class inherits the methods and data defined by the parent class Benefit of Inheritance Reusability Once a behavior (method) is defined in a super class, that behavior is automatically inherited by all subclasses Thus, you write a method only once and it can be used by all subclasses. Once a set of properties (fields) are defined in a super class, the same set of properties are inherited by all subclasses A class and its children share common set of properties A subclass only needs to implement the differences between itself and the parent. Inheritance Superclass Account Superclass Account Sub-class IntegratedAccount Basic .

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