I am currently working on a calculator with Scene Builder and Spring Tool Suite and I am currently missing some functions for the following buttons:

Multiplication, division, subtraction, and clear window, could you please show me how to make these buttons work by adding the missing function from below, thanks?

JAVA code:

package application;

import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.scene.control.Button; import javafx.scene.control.TextField;

public class CalController {

double first, second, result;//created to show the first and second number added to the text field and its result. int oper;//this operator was created for plus, minus, division... @FXML private TextField txtField;

@FXML private Button four;

@FXML private Button five;

@FXML private Button plus;

@FXML private Button equal;

@FXML private Button one;

@FXML private Button two;

@FXML private Button three;

@FXML private Button subtraction;

@FXML private Button multiplication;

@FXML private Button division;

@FXML private Button six;

@FXML private Button zero;

@FXML private Button seven;

@FXML private Button eight;

@FXML private Button nine;

@FXML private Button clear;

@FXML void additionFuction(ActionEvent event) { String value= ((Button) event.getSource()).getText(); first= Double.parseDouble(txtField.getText()); txtField.setText(""); }

@FXML void clearWindow(ActionEvent event) {

}

@FXML void divisionFuction(ActionEvent event) { }

@FXML void equalFuction(ActionEvent event) {

second= Double.parseDouble(txtField.getText()); result= first+second; txtField.setText(Double.toString(result)); }

@FXML void handle(ActionEvent event) { String value= ((Button) event.getSource()).getText(); txtField.setText(txtField.getText()+value); }

@FXML void multiplicationFuction(ActionEvent event) {

} @FXML void subtractionFuction(ActionEvent event) { }

}