1 files changed, 87 insertions, 0 deletions
diff --git a/Java-Kompendium/kap16/2/src/main/java/HelloFX.java b/Java-Kompendium/kap16/2/src/main/java/HelloFX.java
new file mode 100644
index 0000000..df6f82f
--- /dev/null
+++ b/Java-Kompendium/kap16/2/src/main/java/HelloFX.java
@@ -0,0 +1,87 @@
+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();
+    }
+
+}