In this JavaFX source code example, we will see how to create a Line Chart using JavaFX.

A line chart is a basic type of chart that displays information as a series of data points connected by straight line segments. 

A line chart in JavaFX is created with the javafx.scene.chart.LineChart.

JavaFX LineChart Example

In the example, we have a line chart showing the average salary per age.

package sample;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

/**
 * JavaFX LineChart Example
 * @author https://www.sourcecodeexamples.net/
 */
public class Main extends Application {

    @Override
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        HBox root = new HBox();

        Scene scene = new Scene(root, 450, 330);

        NumberAxis xAxis = new NumberAxis();
        xAxis.setLabel("Age");

        NumberAxis yAxis = new NumberAxis();
        yAxis.setLabel("Salary (INR)");

        LineChart lineChart = new LineChart<>(xAxis, yAxis);
        lineChart.setTitle("Average salary per age");

        XYChart.Series data = new XYChart.Series<Number, Number>();
        data.setName("2022");

        data.getData().add(new XYChart.Data<>(18, 10000));
        data.getData().add(new XYChart.Data<>(20, 15000));
        data.getData().add(new XYChart.Data<>(25, 25000));
        data.getData().add(new XYChart.Data<>(30, 30000));
        data.getData().add(new XYChart.Data<>(40, 40000));
        data.getData().add(new XYChart.Data<>(50, 50000));

        lineChart.getData().add(data);

        root.getChildren().add(lineChart);

        stage.setTitle("LineChart");
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

Output: