25.5 Tip Calculator App—Introduction to Event Handling
The Tip Calculator app (Fig. 25.9(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. 25.9(b) and (c)). 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
b) GUI after user enters the amount ...
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