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import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;
public class HelloFX extends Application {
@Override
public void start(Stage stage) {
stage.setTitle("Rechenprogramm");
var grid = new GridPane();
grid.setAlignment(Pos.CENTER);
grid.setPadding(new Insets(5, 5, 5, 5));
grid.setHgap(5);
grid.setVgap(5);
var title = new Text("Rechenprogramm");
title.setFont(Font.font("Arial", FontWeight.BOLD, 25));
grid.add(title, 0, 0, 4, 1);
var numberLabel = new Label("Zahl:");
grid.add(numberLabel, 0, 1);
var numberInput = new TextField();
grid.add(numberInput, 1, 1, 3, 1);
var doubleButton = new Button("Doppelt");
grid.add(doubleButton, 1, 3);
var quadratButton = new Button("Quadrat");
grid.add(quadratButton, 2, 3);
var squareButton = new Button("Wurzel");
grid.add(squareButton, 3, 3);
var result = new Text();
grid.add(result, 1, 2, 3, 1);
doubleButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
var value = numberInput.getText();
var number = Integer.parseInt(value);
result.setText(Integer.toString(number * 2));
}
});
quadratButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
var value = numberInput.getText();
var number = Integer.parseInt(value);
result.setText(Integer.toString(number * number));
}
});
squareButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
var value = numberInput.getText();
var number = Integer.parseInt(value);
result.setText(Double.toString(Math.sqrt(number)));
}
});
Scene scene = new Scene(grid, 500, 300);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch();
}
}
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