Question

Write a program that draws a fixed circle centered at (100, 60) with radius 50. Whenever the mouse is moved, display a message indicating whether the mouse point is inside the circle at the mouse point or outside of it. Write in Java please.

Answer 1

JAVA CODE:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.shape.Circle;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.*;

public class CircleEx extends Application
{
   //overriding the start method in the application class
   @Override
  
   public void start(Stage ps)
   {
       // creating the pane
       Pane p = new Pane();

       // creating cirle with specified properties
       Circle c = new Circle(100, 60, 50);
       c.setFill(Color.CYAN);
       c.setStroke(Color.RED);
       p.getChildren().add(c);

       // registering the handle
       p.setOnMouseMoved(mouseevent -> {
          
           p.getChildren().clear();          
          
           Text t = new Text(mouseevent.getX(), mouseevent.getY(), "Mouse pointer is now " +
               (c.contains(mouseevent.getX(), mouseevent.getY()) ? "inside " : "outside ") +
               "the circle");
           p.getChildren().addAll(c, t);
       });

       // creating the scene
       Scene sc = new Scene(p, 350, 150);
      
       //setting the stage title
       ps.setTitle("Circle Exercise");
      
       //placing the scene in the stage
       ps.setScene(sc);
      
       //displaying the stage
       ps.show();
   }
  
  
}

SCREENSHOT FOR OUTPUT: