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Design a class hierarchy for a simple banking system. Include classes for a Bank, Account, and
Customer. Implement methods for depositing and withdrawing money, transferring funds between
accounts, and checking the account balance.

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Design, implement and test a class that can be used to hold information about a musical note. Test it with an appropriate driver program. DESIGN REQUIREMENTS A programmer MUST be able to set and retrieve the length of the note and the value of the note. The length of a note may be a sixteenth note, eight note, quarter note, half note, or a whole note. The note’s value is an integer. it is specified by counting how far the note lies above or below the A note that orchestras use in tuning ( https://en.wikipedia.org/wiki/A440_(pitch_standard) if needed to check ) . In counting "how far", you should count every key, both the white and black notes on a piano. So the A note above Middle C would have a value of 0. The A note one octave above that would have a value of 12. The default constructor should set a note to a A440 (an A note of frequency 440Hz) quarter note. Include methods to set a note to a specified length and value. Write methods to retrieve information about a note,…
When should one use an abstract class, when should one use an interface, and when should one use both?
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Variables with the same name as variables that have been declared in a superclass and variables that have been defined in a subclass are considered to be the same variable.