Question

Consider the following class definitions.public class Bike{private int numWheels = 2;// No constructor defined}public class EBike extends Bike{private int numBatteries;public EBike(int batteries){numBatteries = batteries;}}The following code segment appears in a method in a class other than Bike or EBike.EBike eB = new EBike(4);Which of the following best describes the effect of executing the code segment?А. An implicit call to the zero-parameter Bike constructor initializes the instance variable numwheels. The instance variable numBatteries is initialized using the value of the parameter batteries.
B. An implicit call to the one-parameter Bike constructor with the parameter passed to the EBike constructor initializes the instance variable numwheels. The instance variable numBatteries is initialized using the value of the parameter batteries. C. Because super is not explicitly called from the EBike constructor, the instance variable numWheels is not initialized. The instance variable numBatteries is initialized using the value of the parameter batteries.
D. The code segment will not execute because the Bike class is a superclass and must have a constructor. E The code segment will not execute because the constructor of the EBike class is missing a second parameter to use to initialize the numWheels instance variable.

Answer 1

Answer:

The answer is "Option A".

Explanation:

Please find the complete program in the attached file.

The given program includes a super-class Bike having a private integer numWheels parameter. The class EBike inherits the class Bike, EBike comprises one parameter function Object() which utilizes its variable number of the private integer Battery level of the battery parameter and the wrong choice can be defined as follows:

In choice B, it is wrong since there is no constructor with a single argument in the Bike class.

In choice C, it is wrong since there no need to call the base class constructor with the super keyword.

In choice, D is wrong because there no need to create a constructor of the base class.

In choice, E is wrong because it does not require the second EBike constructor parameter.