Your computer freezes up on a regular basis. You have checked your hard drive and you have sufficient space. You have not installed any software that could cause disruption. You have recently added more RAM so you realize that you have enough memory and that isn’t causing the problem. Which of the following should you check next?

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.