Line series

A line series is a sequence of data points connected by lines, progressing from left to right or top to bottom, if chart is vertical or horizontal, respectively.
The class used to generate a line series is com.jinsight.jetchart.LineSerie. There are methods that can be used to specify the thickness, style(solid or dashed) and a few other properties.

import javax.swing.*;
import java.awt.*;
import com.jinsight.jetchart.*;

public class Main extends JFrame {

   public Main() { 

        Graph graph=new Graph();

        Container ct=getContentPane();

        ct.add("Center",graph);
        
        LineSerie ls=new LineSerie();
        ls.setTitle("Line series");
        ls.setColor(Color.red);
        double[] values={100,80,90,110};
        ls.setValues(values);

        graph.addSerie(ls);
        
        setSize(400,300);

        setVisible(true);


  }

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

}