(19) Write a program that displays the color of a circle as red when the mouse button is pressed and as blue when the mouse button is released.
import javafx.application.Application;
2) Displays the color of a circle as red when the mouse button is pressed:

Program Code:
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class OOP_19 extends Application
{
@Override
public void start(Stage primaryStage)
{
double width = 450;
double height = 450;
Circle c = new Circle(width / 2, height / 2, Math.min(width, height) / 10, Color.BLUE);
c.setStroke(Color.WHITE);
StackPane pane = new StackPane(c);
primaryStage.setScene(new Scene(pane, width, height));
pane.setOnMousePressed(e -> c.setFill(Color.RED));
pane.setOnMouseReleased(e -> c.setFill(Color.BLUE));
primaryStage.setTitle("Click circle..");
primaryStage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}
Output:
1) Displays the color of a circle as blue when the mouse button is released.
2) Displays the color of a circle as red when the mouse button is pressed:

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