Line is a part of JavaFX. The Line class represents a line in a 2D space.

Constructor for the class:

1. Line(): Creates a new instance for line
2. Line(double startX, double startY, double endX, double endY): Creates a new Line with specified staring and ending point

Commonly Used Methods:

Below programs illustrate the Line class:

1. Java program to create a line with starting and ending coordinates passed as arguments: This program creates a Line indicated by the name line( start point and the end point is passed as arguments). The Line 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 line is attached. The group is attached to the scene. Finally, the show() method is called to display the final results.
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   // Java program to create a line with starting // and ending coordinates passed as arguments import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.DrawMode; import javafx.scene.layout.*; import javafx.event.ActionEvent; import javafx.scene.shape.Line; import javafx.scene.control.*; import javafx.stage.Stage; import javafx.scene.Group;    public class line_0 extends Application {        // launch the application     public void start(Stage stage)     {                    // set title for the stage         stage.setTitle("creating line");            // create a line         Line line = new Line(10.0f, 10.0f, 200.0f, 140.0f);            // create a Group         Group group = new Group(line);            // translate the line to a position         line.setTranslateX(100);         line.setTranslateY(100);            // create a scene         Scene scene = new Scene(group, 500, 300);            // set the scene         stage.setScene(scene);            stage.show();     }        // Main Method     public static void main(String args[])     {         // launch the application         launch(args);     } }

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   Output:
   

2. Java program to create a line with starting and ending coordinates set using function setStartX(), setStartY()setEndX(), setEndY() function: This program creates a Line indicated by the name line(start point and end point is set using setEndX(), setEndY(), setStartX(), setStartY() function). The Line 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 line is attached.The group is attached to the scene. Finally, the show() method is called to display the final results.
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   // Java program to create a line with starting  // and ending coordinates set using function  // setStartX(), setStartY() setEndX(), // setEndY() function import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.DrawMode; import javafx.scene.layout.*; import javafx.event.ActionEvent; import javafx.scene.shape.Line; import javafx.scene.control.*; import javafx.stage.Stage; import javafx.scene.Group;    public class line_1 extends Application {        // launch the application     public void start(Stage stage)     {         // set title for the stage         stage.setTitle("creating line");            // create a line         Line line = new Line();            // set staring position         line.setStartX(10.0f);         line.setStartY(10.0f);            // set ending position         line.setEndX(140.0f);         line.setEndY(140.0f);            // create a Group         Group group = new Group(line);            // translate the line to a position         line.setTranslateX(100);         line.setTranslateY(100);            // create a scene         Scene scene = new Scene(group, 500, 300);            // set the scene         stage.setScene(scene);            stage.show();     }        // Main Method     public static void main(String args[])     {                    // launch the application         launch(args);     } }

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   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/Line.html