You can create a working version of the TipCalculator (Fig 12.8) program or you can create a TaxCalculator application using JavaFX. You can use the TipCalculator program as a template. The taxes would have a default value of 6%, but you can use the slider to increase or decrease the taxes.

So I was thinking the would start default of 6 and slide from 6 to 12 percent.

The Tip Calculator app (Fig. 12.8(a)) calculates and displays a restaurant bill tip and total. By default, the app calculates the total with a 15% tip. You can specify a tip percentage from 0% to 30% by moving the slider thumb-this updates the tip percentage (Fig. 12.8(b)D) and (c)D). In this section, you'll build a Tip Calculator app using several JavaFX components and learn how to respond to user interactions with the GUI a) Initial Tip Calculator GUI Title bar Enter the bill amount in this TextField Amount Current tip percentage is displayed in this Label 15% Tip Total Move the STider thumb to change the tip percentage Calculate b) Gul after you enter the amount 34.56 and click the Calculate Button Tip Calcu..- Amount34.56 15% Tip $5.18 Total $39.74 Click the Calculate Button to display the tip and total Calculate c) GuI after user moves the Slider's thumb to change the tip percentage to 20%, then clicks the Calculate Button 3Tip Calcu...-X Amount34.56 Updated tip percentage after the user moved the Slider's thumb 20% Tip $6.91 Total $41.47 Cakulate