JAVA Programming

implement a TipCalculator using JavaFX GUI for restaurant.

Figure 3 Tip and TipCalculator class diagram 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 setTax Rate (double taxRate); public double calculateTax () public double calculateTip () public double calculateTotal() Exception Handling Sample Code: double amount=0; //txt [0] is an instance of TextField for "Amount" try{ amount = Double.parseDouble (txt [0].getText()); catch (NumberFormatException e) { Alert alert = new Alert (Alert Type .WARNING); alert.setTitle ("Warning!"); Figure 3 Tip and TipCalculator class diagram 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 setTax Rate (double taxRate); public double calculateTax () public double calculateTip () public double calculateTotal() Exception Handling Sample Code: double amount=0; //txt [0] is an instance of TextField for "Amount" try{ amount = Double.parseDouble (txt [0].getText()); catch (NumberFormatException e) { Alert alert = new Alert (Alert Type .WARNING); alert.setTitle ("Warning!")