Section 25.5.5 TipCalculatorController Class
• The RoundingMode enum of package java.math is used to specify how BigDecimal values are rounded during calculations or when formatting floating-point numbers as Strings.
• Class NumberFormat of package java.text provides numeric formatting capabilities, such as locale-specific currency and percentage formats.
• A Button’s event handler receives an ActionEvent, which indicates that the Button was clicked. Many JavaFX controls support ActionEvents.
• Package javafx.scene.control contains many JavaFX control classes.
• The @FXML annotation preceding an instance variable indicates that the variable’s name can be used in the FXML file that describes the app’s GUI. The variable names that you specify ...
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