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10 Java Object-Oriented Programming Exercise Ques
2023-06-16 14:24:11 深夜i     --     --

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In the world of programming, Java is one of the most prominent languages out there. A key feature of Java is its ability to support object-oriented programming. As such, it is important for any Java programmer to have a good understanding of object-oriented programming principles and be able to tackle coding exercises that involve them. In this article, we will provide 10 Java object-oriented programming exercises with solutions to help you sharpen your skills.

1. Write a Java program that creates a class called "Rectangle" which has two fields - length and width. The program should then create an object of the Rectangle class and use its methods to calculate the area and perimeter of the rectangle.

2. Create a class hierarchy that represents different kinds of shapes such as triangles, rectangles, and circles. Each class should have methods to calculate its area and perimeter.

3. Implement inheritance in Java by creating a class hierarchy that represents different animals. Each animal should have its own set of methods and fields, but they should all inherit from a common "Animal" class.

4. Write a program that simulates a library. The library should have a collection of books, each with its own title and author. The program should allow users to search for books by author or title and should keep track of book availability.

5. Implement encapsulation by creating a class that represents a bank account. The class should have methods for depositing and withdrawing money, and the balance should only be accessible through these methods.

6. Write a program that simulates a restaurant. Customers can place orders for food and drinks, and the program should keep track of their orders and calculate the total bill.

7. Use polymorphism to create a program that simulates a zoo. The program should have a list of different animals, each with their own set of behaviors. For example, a lion would be able to roar and hunt, while a monkey would be able to climb and swing from tree to tree.

8. Create a program that implements the concept of abstract classes. The program should have a class hierarchy that represents different kinds of vehicles, such as cars, trucks, and motorcycles. Each vehicle class should have its own set of methods and fields, but they should all inherit from an abstract "Vehicle" class.

9. Implement the concept of interfaces by creating a program that represents different types of music players, such as mp3 players and CD players. Each player should implement an interface that defines methods for playing and pausing music.

10. Write a program that uses the concept of composition to create a "Song" class that is composed of an artist and a title. The program should allow users to create a playlist of songs and to search for songs by artist or title.

Key Words: Java, Object-Oriented Programming, Exercises, Solutions, Encapsulation, Inheritance, Polymorphism, Abstract Classes, Interfaces, Composition.

  
  

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