Assume the existence of a Phone class . Define a derived class , CameraPhone tha

Question

Assume  the existence of a Phone class . Define a derived class , CameraPhone that contains two data members: an integer  named , imageSize, representing the size in megapixels of each picture, and an integer  named  memorySize, representing the number of gigabytes in the camera's memory. There is a constructor  that accepts two integer  parameters  corresponding to the above two data members and which are used to initialize  the respective data members. There is also a function named  numPictures that returns (as an integer ) the number of pictures the camera's memory can hold.

Explanation / Answer

public class CameraPhone extends Phone { public CameraPhone(int imageSize, int memorySize) { this.imageSize = imageSize; this.memorySize = memorySize; } public int numPictures() { return memorySize * 1000 / imageSize; } private int imageSize; private int memorySize; }

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