JavaFX | Polyline with examples

Polyline is part of the JavaFX library. Polyline is a set of connected points. Though Polyline is almost similar to the Polygon class, the only difference is polygon forms a closed area whereas the Polyline can form both closed and open area. Also, Polyline class extends shape class.

Constructors for class are:

1. Polyline():Creates an empty instance of Polyline.
2. Polyline(double… points): creates a new instance of polyline with given points

Commonly used methods:

Below programs illustrate the use of Polyline:

1. Program to create an open area of connected segments using polyline: This program creates a Polyline indicated by the name polyline( the coordinates of the points of the line segments to create an open area). The Polyline 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 polyline is attached. The group is attached to the scene. Finally, the show() method is called to display the final results.

   
   

   
   
   

   // Java Program to create a open area // of connected segments using polyline import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.*; import javafx.scene.paint.Color; import javafx.scene.shape.Polyline; import javafx.scene.control.*; import javafx.stage.Stage; import javafx.scene.Group; public class Polyline_0 extends Application {        // launch the application     public void start(Stage stage)     {         // set title for the stage         stage.setTitle("creating Polyline");            // points         double points[] = { 20.0d, 20.0d, 40.0d, 240.0d, 60.0d,                           180.0d, 80.0d, 200.0d, 100.0d, 90.0d };            // create a polyline         Polyline polyline = new Polyline(points);            // create a Group         Group group = new Group(polyline);            // 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:
   

2. Program to create a closed area of connected segments using polyline: This program creates a Polyline indicated by the name polyline( the coordinates of the points of the line segments to create a closed area). The Polyline 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 polyline is attached. The group is attached to the scene. Finally, the show() method is called to display the final results.

   
   

   
   
   

   // Java Program to create a closed area // of connected segments using polyline import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.*; import javafx.scene.paint.Color; import javafx.scene.shape.Polyline; import javafx.scene.control.*; import javafx.stage.Stage; import javafx.scene.Group; public class Polyline_1 extends Application {        // launch the application     public void start(Stage stage)     {         // set title for the stage         stage.setTitle("creating Polyline");            // points         double points[] = { 20.0d, 20.0d, 40.0d, 240.0d, 60.0d,              180.0d, 80.0d, 200.0d, 100.0d, 90.0d, 20.0d, 20.0d };            // create a polyline         Polyline polyline = new Polyline(points);            // create a Group         Group group = new Group(polyline);            // 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 converter.
Reference:https://docs.oracle.com/javase/8/javafx/api/javafx/scene/shape/Polyline.html