NoteDataStructureClass

//Zehra Baig
//CSC-236-C1
//Lab 2-B

import java.text.DecimalFormat;

public class NoteDataStructureClass implements NoteADT
{
    //Fields
    private int noteValue;
    private String noteStrValue;
    private String noteLength;
    private String keyColor;
    private double frequency;

    //Default Constructor
    public NoteDataStructureClass()
    {
        this(-9, "Quarter");
    }

    //Overloaded Constructor
    public NoteDataStructureClass(int nv, String nl)
    {
        setValue(nv);
        setLength(nl);
    }

    //Copy Constructor
    public NoteDataStructureClass(NoteDataStructureClass ndsc)
    {
        this.noteValue = ndsc.noteValue;
        this.noteLength = ndsc.noteLength;
    }

    //Sets numeric value of Note obj, calls other methods dependent on it
    public void setValue(int nv)
    {
        noteValue = nv;
        setStrValue();
        setKeyColor();
        setFrequency();
    }

    //Sets length of Note obj
    public void setLength(String nl)
    {
        noteLength = nl;
    }

    //Sets String value of Note obj
    public void setStrValue()
    {
        if(noteValue == 0 || Math.abs(noteValue) == 12 ||
                Math.abs(noteValue) == 24 || Math.abs(noteValue) == 36 ||
                noteValue == -48)
        {
            noteStrValue = "A";
        }
        else if(noteValue == 1 || noteValue == 13 ||
                noteValue == 25 || noteValue == 37 ||
                noteValue == -11 || noteValue == -23 ||
                noteValue == -35 || noteValue == -47)
        {
            noteStrValue = "A#";
        }
        else if(noteValue == 2 || noteValue == 14 ||
                noteValue == 26 || noteValue == 38 ||
                noteValue == -10 || noteValue == -22 ||
                noteValue == -34 || noteValue == -46)
        {
            noteStrValue = "B";
        }
        else if(noteValue == 3 || noteValue == 15 ||
                noteValue == 27 || noteValue == 39 ||
                noteValue == -9 || noteValue == -21 ||
                noteValue == -33 || noteValue == -45)

        {
            noteStrValue = "C";
        }
        else if(noteValue == 4 || noteValue == 16 ||
                noteValue == 28 || noteValue == -8 ||
                noteValue == -20 || noteValue == -32 ||
                noteValue == -44)
        {
            noteStrValue = "C#";
        }
        else if(noteValue == 5 || noteValue == 17 ||
                noteValue == 29 || noteValue == -7 ||
                noteValue == -19 || noteValue == -31 ||
                noteValue == -43)
        {
            noteStrValue = "D";
        }
        else if(noteValue == 6 || noteValue == 18 ||
                noteValue == 30 || noteValue == -6 ||
                noteValue == -18 || noteValue == -30 ||
                noteValue == -42)
        {
            noteStrValue = "D#";
        }
        else if(noteValue == 7 || noteValue == 19 ||
                noteValue == 31 || noteValue == -5 ||
                noteValue == -17 || noteValue == -29 ||
                noteValue == -41)
        {
            noteStrValue = "E";
        }
        else if(noteValue == 8 || noteValue == 20 ||
                noteValue == 32 || noteValue == -4 ||
                noteValue == -16 || noteValue == -28 ||
                noteValue == -40)
        {
            noteStrValue = "F";
        }
        else if(noteValue == 9 || noteValue == 21 ||
                noteValue == 33 || noteValue == -3 ||
                noteValue == -15 || noteValue == -27 ||
                noteValue == - 39)
        {
            noteStrValue = "F#";
        }
        else if(noteValue == 10 || noteValue == 22 ||
                noteValue == 34 || noteValue == -2 ||
                noteValue == -14 || noteValue == -26 ||
                noteValue == -38)
        {
            noteStrValue = "G";
        }
        else if(noteValue == 11 || noteValue == 23 ||
                noteValue == 35 || noteValue == -1 ||
                noteValue == -13 || noteValue == -25 ||
                noteValue == -36)
        {
            noteStrValue = "G#";
        }

        else
        {
            noteStrValue = "Out of scope";
        }
    }

    //Sets key color of Note obj
    public void setKeyColor()
    {
        //All sharps have a length of 2, no need to check what each character is
        if(noteStrValue.length() == 2)
        {
            keyColor = "Black key (sharp)";
        }
        else
        {
            keyColor = "White key (natural)";
        }
    }

    //Calculates frequency of note
    public void setFrequency()
    {
        frequency = (440.0 * Math.pow(2, noteValue / 12.0));
    }

    //Returns numeric value of Note obj
    public int getValue()
    {
        return noteValue;
    }

    //Returns length of Note obj
    public String getLength()
    {
        return noteLength;
    }

    //Returns String value of Note obj
    public String getStrValue()
    {
        return noteStrValue;
    }

    //Returns key color of Note obj
    public String getKeyColor()
    {
        return keyColor;
    }

    //Returns frequency of Note obj
    public double getFrequency()
    {
        return frequency;
    }

    //Overridden toString() method
    public String toString()
    {
        //Rounding frequency to 6 decimal places
        DecimalFormat freq = new DecimalFormat("#,###.######");
        return "\nNote: " + this.getStrValue()
             + "\nLength: " + this.getLength()
             + "\nNumeric Value: " + this.getValue()
             + "\n" + this.getKeyColor()
             + "\nFrequency: " + freq.format(this.getFrequency()) + " hertz\n";
    }
}