Ellipse class is a part of the JavaFX library. The ellipse class creates an ellipse on providing the center and X and Y radius. Ellipse class extends Shape class.
Constructors of the class are:
- Ellipse(): creates an empty instance of ellipse
- Ellipse(double X, double Y): creates a ellipse with the given x and y radius
- Ellipse(double x, double y, double X, double Y): creates a ellipse with given center and radius
Commonly used methods:
method | explanation |
---|---|
getCenterX() | returns the X coordinate of the center of ellipse |
getCenterY() | returns the Y coordinate of the center of ellipse |
getRadiusX() | returns the value of X Radius(along major axis) |
getRadiusY() | returns the value of Y Radius(along minor axis) |
setCenterX(double v) | sets the X coordinate of the center of ellipse |
setCenterY(double v) | sets the Y coordinate of the center of ellipse |
setRadiusX(double v) | returns the value of X Radius(along major axis) |
setRadiusY(double v) | returns the value of Y Radius(along minor axis) |
setFill(Color c) | sets the fill of the ellipse |
Below programs will illustrate the use of ellipse class:
-
Java program to create ellipse by passing the coordinates of the center and radius as arguments in constructor:
This program creates a Ellipse indicated by the name ellipse( the coordinates of the center and the radius is passed as arguments). The Ellipse will be created inside a scene, which in turn will be hosted inside a stage. The function setTitle() is used to provide title to the stage. Then a Group is created, and the ellipse is attached. The group is attached to the scene. Finally, the show() method is called to display the final results.
// Java program to create ellipse by passing the
// coordinates of the center and radius as arguments in constructor
import
javafx.application.Application;
import
javafx.scene.Scene;
import
javafx.scene.control.Button;
import
javafx.scene.layout.*;
import
javafx.event.ActionEvent;
import
javafx.scene.shape.Ellipse;
import
javafx.scene.control.*;
import
javafx.stage.Stage;
import
javafx.scene.Group;
public
class
ellipse_0
extends
Application {
// launch the application
public
void
start(Stage stage)
{
// set title for the stage
stage.setTitle(
"creating ellipse"
);
// create a ellipse
Ellipse ellipse =
new
Ellipse(
200
.0f,
120
.0f,
150
.0f,
80
.f);
// create a Group
Group group =
new
Group(ellipse);
// create a scene
Scene scene =
new
Scene(group,
500
,
300
);
// set the scene
stage.setScene(scene);
stage.show();
}
public
static
void
main(String args[])
{
// launch the application
launch(args);
}
}
Output:
-
Java program to create ellipse by passing the coordinates of the center and radius using functions setCenterX(), setCenterY() etc.:
This program creates a Ellipse indicated by the name ellipse.The coordinates of the center and the radius will be set using functions setCenterX(), setCenterY(), setRadiusX(), and setRadiusY() functions. The Ellipse will be created inside a scene, which in turn will be hosted inside a stage. The function setTitle() is used to provide title to the stage. Then a Group is created, and the ellipse is attached.The group is attached to the scene. Finally, the show() method is called to display the final results.
// Java program to create ellipse by passing the
// coordinates of the center and radius using
// functions setCenterX(), setCenterY() etc.
import
javafx.application.Application;
import
javafx.scene.Scene;
import
javafx.scene.control.Button;
import
javafx.scene.layout.*;
import
javafx.event.ActionEvent;
import
javafx.scene.shape.Ellipse;
import
javafx.scene.control.*;
import
javafx.stage.Stage;
import
javafx.scene.Group;
public
class
ellipse_1
extends
Application {
// launch the application
public
void
start(Stage stage)
{
// set title for the stage
stage.setTitle(
"creating ellipse"
);
// create a ellipse
Ellipse ellipse =
new
Ellipse();
// set center
ellipse.setCenterX(
150
.0f);
ellipse.setCenterY(
120
.0f);
// set radius
ellipse.setRadiusX(
130
.0f);
ellipse.setRadiusY(
100
.0f);
// create a Group
Group group =
new
Group(ellipse);
// create a scene
Scene scene =
new
Scene(group,
500
,
300
);
// set the scene
stage.setScene(scene);
stage.show();
}
public
static
void
main(String args[])
{
// launch the application
launch(args);
}
}
Output:
-
Java program to create ellipse by passing the coordinates of the center and radius using functions setCenterX(), setCenterY(), and set a fill using setFill() function:
This program creates a Ellipse indicated by the name ellipse.The coordinates of the center and the radius will be set using functions setCenterX(), setCenterY(), setRadiusX(), and setRadiusY() functions.The function setFill() will be used to set the fill of the ellipse. The Ellipse will be created inside a scene, which in turn will be hosted inside a stage. The function setTitle() is used to provide title to the stage. Then a Group is created, and the ellipse is attached.The group is attached to the scene. Finally, the show() method is called to display the final results.
// Java program to create ellipse by passing the
// coordinates of the center and radius using
// functions setCenterX(), setCenterY(), and
// set a fill using setFill() function
import
javafx.application.Application;
import
javafx.scene.Scene;
import
javafx.scene.control.Button;
import
javafx.scene.layout.*;
import
javafx.event.ActionEvent;
import
javafx.scene.shape.Ellipse;
import
javafx.scene.control.*;
import
javafx.scene.paint.Color;
import
javafx.stage.Stage;
import
javafx.scene.Group;
public
class
ellipse_2
extends
Application {
// launch the application
public
void
start(Stage stage)
{
// set title for the stage
stage.setTitle(
"creating ellipse"
);
// create a ellipse
Ellipse ellipse =
new
Ellipse();
// set center
ellipse.setCenterX(
150
.0f);
ellipse.setCenterY(
120
.0f);
// set radius
ellipse.setRadiusX(
130
.0f);
ellipse.setRadiusY(
100
.0f);
// set fill
ellipse.setFill(Color.BLUE);
// create a Group
Group group =
new
Group(ellipse);
// create a scene
Scene scene =
new
Scene(group,
500
,
300
);
// set the scene
stage.setScene(scene);
stage.show();
}
public
static
void
main(String args[])
{
// launch the application
launch(args);
}
}
Output:
Note : The above programs might not run in an online IDE please use an offline compiler.
Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/shape/Ellipse.html