Question

PP 3.13 Write a JavaFX application that draws a circle centered at poinit (200, 200) with a random radius in the range 50 to 150. Each time the program is run it will draw a different circle. PP 3.14 Write a JavaFX application that displays your name rotated at a random angle (0 to 360). Each time the program is run it will draw your name at a different angle. a random color created using the rgb method of the Color class. Each time the program is run it will display a rectangle with a different color. PP 3.16 Write a JavaFX application that displays a depiction of a solar system with a sun and three planets. Use ellipses to show the orbits of the planets around the sun.

PP.14

Answer 1

Q.1->

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import java.util.Random;
import javafx.stage.Stage;
import javafx.scene.shape.Circle;
public class CircleE extends Application {
   @Override
   public void start(Stage stage) {
      //Drawing a Circle
      Circle circle = new Circle();
      //Setting the properties of the circle
      circle.setCenterX(200.0f);
      circle.setCenterY(200.0f);
   Random R = new Random();
   float no = R.nextFloat();
   no = no*200;
   System.out.println(":-> "+no);
  
      circle.setRadius(no);
      //Creating a Group object
      Group root = new Group(circle);
      //Creating a scene object
      Scene scene = new Scene(root, 600, 300);
      //Setting title to the Stage
      stage.setTitle("Drawing a Circle");
      //Adding scene to the stage
      stage.setScene(scene);
      //Displaying the contents of the stage
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Q.2->

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
import javafx.scene.text.Text;
import java.util.Random;
public class Name extends Application {
   @Override
   public void start(Stage stage) {
      Text text = new Text();     
      text.setText("Ambuj Shukla (Your Name)");
      text.setX(100);
      text.setY(100);   
      Rotate rotate = new Rotate();
         Random R = new Random();
   float no = R.nextFloat();
   no = no*360;
   System.out.println(no);
      rotate.setAngle(no);
      rotate.setPivotX(150);
      rotate.setPivotY(225);
      text.getTransforms().addAll(rotate);
      Group root = new Group(text);
      Scene scene = new Scene(root, 600, 300);
      stage.setTitle("Application");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Q.3->

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
import javafx.scene.paint.Paint;
import java.util.Random;
public class RECTANGLE extends Application {
    public Paint randomC() {
        Random random = new Random();
        int r = random.nextInt(255);
        int g = random.nextInt(255);
        int b = random.nextInt(255);
        return Color.rgb(r, g, b);
    }
   public void start(Stage stage) {
      //Drawing Rectangle1
      Rectangle rectangle = new Rectangle(150, 75, 200, 150);
   System.out.println(Color.BLUE);
      rectangle.setFill(randomC());
      rectangle.setStroke(Color.BLACK);
      Group root = new Group(rectangle);
      //Creating a scene object
      Scene scene = new Scene(root, 600, 300);
      stage.setTitle("Rotation transformation example");
      stage.setScene(scene);
       
      //Displaying the contents of the stage
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Q.4->

import javafx.animation.Interpolator;
import javafx.animation.PathTransition;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Ellipse;
import javafx.scene.shape.Sphere;
import javafx.stage.Stage;
import javafx.util.Duration;
import javafx.scene.paint.Color;
import javafx.scene.Group;
public class Orbit extends Application {
    @Override
    public void start(Stage primaryStage) {
        Sphere sun = new Sphere(45);
        Sphere p1 = new Sphere(15);
        Sphere p2 = new Sphere(15);
        Sphere p3 = new Sphere(15);
        Ellipse ellipse = new Ellipse();
   ellipse.setCenterX(200);
         ellipse.setCenterY(200);
   ellipse.setRadiusX(200);
   ellipse.setRadiusY(100);
   ellipse.setFill(Color.WHITE);
        ellipse.setStroke(Color.BLACK);
   sun.setTranslateX(200);
        sun.setTranslateY(200);
   p1.setTranslateX(140);
        p1.setTranslateY(100);
   p2.setTranslateX(350);
        p2.setTranslateY(260);
   p3.setTranslateX(180);
        p3.setTranslateY(300);
      //Creating a Group object
      Group root1 = new Group(ellipse,p1,p2,p3,sun);
      //Creating a scene object
      Scene scene1 = new Scene(root1, 600, 300);
      //Setting title to the Stage
      primaryStage.setTitle("Drawing a Circle");
      //Adding scene to the stage
      primaryStage.setScene(scene1);
      //Displaying the contents of the stage
      primaryStage.show();
    }
    public static void main(String[] args) {
        launch(args);
    }

}

//Screenshot of Code

//Screenshot of Outputs

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/If you have any doubt.Please feel free to ask.Thanks