Difference Between Inheritance And Interface In Java
Distinguishing Between Inheritance and Interfaces in Java
Difference Between Inheritance And Interface In Java
In Java, inheritance and interfaces are mechanisms used to achieve code reusability and create relationships between classes. Inheritance allows a class to inherit the properties and behaviors of another class, promoting code reuse and establishing an “is-a” relationship between the two classes. Interfaces, on the other hand, define a contract for classes to implement, specifying a set of methods that must be present in any class that implements the interface. While inheritance promotes code reuse with an “is-a” relationship, interfaces promote code reuse through a “has-a” relationship, allowing classes to have multiple behaviors without the restrictions of single inheritance.
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1 - Inheritance in Java:
Inheritance allows a subclass (child class) to inherit properties and behaviors from a superclass (parent class).
Subclasses can reuse code from the superclass, reducing duplication and promoting code reusability.
It establishes an “is a” relationship, where the subclass is a specialized version of the superclass.
Subclasses can access public and protected members of the superclass.
Inheritance supports code extensibility, allowing new classes to be created based on existing ones.
2) Interfaces in Java:
Interfaces define a contract for classes to implement, specifying required methods without any implementation details.
A class can implement multiple interfaces, enabling it to inherit behaviors from multiple sources.
Interfaces enable a form of multiple inheritance in Java, unlike classes which do not support multiple inheritance.
Interfaces allow for polymorphism, where objects of different classes that implement the same interface can be treated uniformly.
Interfaces promote loose coupling, as they allow classes to interact based on interfaces rather than concrete implementations.
For the training program, it is important to cover these points comprehensively to help students understand the differences between inheritance and interfaces in Java effectively. Exercises and examples that demonstrate the practical usage of both concepts would further enhance the learning experience.
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