Oracle Exam 1Z0-808 Topic 17 Question 94 Discussion

Actual exam question for Oracle's 1Z0-808 exam

Question #: 94
Topic #: 17

Given these requirements:

Bus and Boat are Vehicle type classes.

The start() and stop() methods perform common operations across the Vehicle class type.

The ride() method performs a unique operations for each type of Vehicle.

Which set of actions meets the requirements with optimized code?

A1. Create an abstract class Vehicle by defining start() and stop() methods, and declaring the ride()
abstract method.
2. Create Bus and Boat classes by inheriting the Vehicle class and overriding the ride() method.

B1. Create an interface Vehicle by defining start() and stop() methods, and declaring the ride()
abstract method.
2. Create Bus and Boat classes by implementing the Vehicle class.

C1. Create an abstract class Vehicle by declaring stop(), start(), and ride() abstract methods.
2. Create Bus and Boat classes by inheriting the Vehicle class and overriding all the methods.

D1. Create an interface Vehicle by defining default stop(), start(), and ride() methods.
2. Create Bus and Boat classes by implementing the Vehicle interface and overriding the ride()
method.

Show Suggested Answer

Suggested Answer: B

by Tamala at Jun 03, 2024, 02:44 AM

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Ines

1 years ago

I'm just glad they didn't ask us to create a `Unicycle` class too. That would've been a real `balancing` act!

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Eliz

11 months ago

B) 1. Create an interface Vehicle by defining start() and stop() methods, and declaring the ride() abstract method. 2. Create Bus and Boat classes by implementing the Vehicle class.

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Marylyn

12 months ago

A) 1. Create an abstract class Vehicle by defining start() and stop() methods, and declaring the ride() abstract method. 2. Create Bus and Boat classes by inheriting the Vehicle class and overriding the ride() method.

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Kimberlie

1 years ago

I'd have to go with A as well. Defining an abstract class for the Vehicle type and letting the concrete classes handle the specific implementation is a great way to optimize the code.

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Cherelle

1 years ago

I agree, A is the way to go. Using an abstract class gives you the flexibility to add common functionality in the base class while still allowing for unique implementation in the derived classes.

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Dustin

12 months ago

C) 1. Create an abstract class Vehicle by declaring stop(), start(), and ride() abstract methods. 2. Create Bus and Boat classes by inheriting the Vehicle class and overriding all the methods.

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Hannah

12 months ago

I think B could work too. By using an interface, you can have multiple inheritance and still enforce the implementation of certain methods.

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Dorothy

1 years ago

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Emilio

1 years ago

Option A seems the most logical choice here. Defining an abstract class for the common operations and letting the concrete classes handle the unique logic is a classic OOP pattern.

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