Interfaces


Friday, November 10, 2023 Difficulty: Intermediate

Objective

Develop a Java program that implements an interface called IVehicle. This interface will contain two methods: one named Drive of type void and another named Refuel of type bool. The Refuel method will have a parameter of type integer that will represent the amount of gasoline to refuel.

Next, create a class Car that implements the IVehicle interface. The constructor of the Car class will take the initial amount of gasoline for the car as a parameter. Implement the Drive and Refuel methods in the Car class.

The Drive method will print on the screen that the car is driving if the amount of gasoline is greater than 0. The Refuel method will increase the car's gasoline and return true.

To conduct tests, create an object of type Car with 0 gasoline in the Main method of the program. Prompt the user to enter an amount of gasoline to refuel, and finally, execute the Drive method of the car.

Additional Instructions:

  • Use the main class (Main) to instantiate and test objects of the Car class.
  • Ensure proper handling of gasoline input provided by the user.
  • Observe how the implementation of interfaces facilitates code extension and adaptation.

Input

Enter the amount of gasoline to refuel: 15

Output

Refueling successful. Current gasoline level: 15
Attempting to drive the car:
The car is driving.

Solution

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