Kotlin Object-Oriented Programming: Exercises, Practice, Solutions

Kotlin Object-oriented programming Exercises [ 7 exercises with solution ]

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1. Write a Kotlin object-oriented program that creates a base class Shape and derives subclasses Circle, Rectangle, and Triangle. Implement appropriate methods in each class and demonstrate polymorphism.

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2. Write a Kotlin object-oriented program that implements a singleton pattern for a class Logger to provide logging functionality throughout the application.

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3. Write a Kotlin object-oriented program that creates a sealed class Result with subclasses Success and Error to represent the result of an operation. Use pattern matching to handle different result types.

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4. Write a Kotlin object-oriented program that implements the decorator pattern by creating a base class Component and decorator classes BoldDecorator and ItalicDecorator to modify the behavior of the component.

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5. Write a Kotlin object-oriented program that implements the factory method pattern by creating an abstract class Animal with subclasses Tiger and Lion. Use a factory class to create instances of animals based on user input.

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6. Write a Kotlin object-oriented program that creates an interface Observable with methods subscribe and unsubscribe. Implement it in a class Publisher to allow objects to subscribe and unsubscribe from events.

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7. Write a Kotlin object-oriented program that implements the composite pattern by creating a base class Component and composite classes CompositeComponent and BranchComponent to represent a hierarchical structure.

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More to Come !

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