import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Random;
import java.util.TimeZone;
import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.XYChart;
import org.knowm.xchart.XYChartBuilder;

/** Year scale */
public class xchart_date2 {

  public static void main(String[] args) {

    XYChart chart = getChart();
    new SwingWrapper<>(chart).displayChart();
  }


  static public XYChart getChart() {

    // Create Chart
    XYChart chart = new XYChartBuilder().width(800).height(600).title("Year Scale").build();

    // Customize Chart
    chart.getStyler().setLegendVisible(false);

    // Series
    List xData = new ArrayList<>();
    List yData = new ArrayList<>();

    Random random = new Random();

    DateFormat sdf = new SimpleDateFormat("yyyy-MM");
    sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
    Date date = null;
    for (int i = 1; i <= 14; i++) {
      try {
        date = sdf.parse("" + (2001 + i) + "-" + random.nextInt(12));
      } catch (ParseException e) {
        e.printStackTrace();
      }
      xData.add(date);
      yData.add(Math.random() * i);
    }

    chart.addSeries("blah", xData, yData);

    return chart;
  }

}