Implement the class Tip according to the given UML and use it as the background class.

TipCalculator

private Tip tip; //an instance of Tip

private String[] strLabel={}; //initilize the array

private TextField[] txt;

private String[] strBtn = {}; //initialize the array

private Button[] btn;

Tip

private double amount; //amount of dollar consumed

private static double taxRate; //percent of tax

private double tipPercent ; //percent of tip

public Tip();

public Tip(double amount, double tipPercent);

public double getAmount();

public void setAmount(double amount);

public double getTipPercent();

public void setTipPercent(double tipPercent);

public static double getTaxRate();

public static void setTaxRate(double taxRate);

public double calculateTax()

public double calculateTip()

public double calculateTotal()