Information is stored on a compact disk in a coded pattern of tiny pits arranged in a track that spirals outward toward the rim of the disk. As the disc spins inside a player, the track is scanned at constant linear speed by a stationary scanning head. How must the rotation speed of the disc change as the player's scanning head moves radially outward in order to scan the track at constant linear speed

File account.java (see previous exercise) contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a string representation. note that the constructor for this class creates a random account number. save this class to your directory and study it to see how it works. then write the following additional code: 1. suppose the bank wants to keep track of how many accounts exist. a. declare a private static integer variable numaccounts to hold this value. like all instance and static variables, it will be initialized (to 0, since it’s an int) automatically. b. add code to the constructor to increment this variable every time an account is created. c. add a static method getnumaccounts that returns the total number of accounts. think about why this method should be static - its information is not related to any particular account. d. file testaccounts1.java contains a simple program that creates the specified number of bank accounts then uses the getnumaccounts method to find how many accounts were created. save it to your directory, then use it to test your modified account class.

Ais a picture icon that is a direct link to a file or folder

Which feature is selected to practice and save the timing of a presentation