. NoteADT - Show the interface and all abstract methods ass Show the following NoteDataStructureCl methods: default constructor, overloaded constructor, copy constructor, setValue (calls other methods: setStrValue, setKeyColor setFrequency), setLength (calls setStrLength), setFrequency (should be double value- cast)setKeyColor, getValue, getLength, getkeyColor, getFrequency, toString. NoteClientDemoClass -Instantiate two Note objects using the overloaded constructor and two Note objects using the default constructor. A sample output for 1 Note object might appear like Length: Eighth note Value: -3 Black key (sharp) 369.995672 Hz 2. Specify, design, and implement a "Note" class that can be used to hold information about a musical note. A programmer should 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, eighth note, quarter note, half note or whole note. A value is specified by indicating how far the note lies above or below the "A" note that orchestras use in tuning. In counting "how far," you should include both the white and black notes on a piano. For example, the note (value) numbers for the octave beginning at middle C are shown as integers h ere: Write a complete Java program The default constructor should set a note to a middle C quarter note. Include methods to set a note to a specified length and value. tell you: a) The letter of the note (A, B, C, ,6) - Write methods to retrieve information about a note, includinq methods to b) Whether the note is a natural (white key) or a sharp (black key) on the piano c) The frequency of a note in hertz. In order to calculate the frequency, use t he fo rmula: 440 2n/12, where n is the note number