JSP Multi Series Chart

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<%@ page language="java" contentType="text/html; charset=UTF-8"	pageEncoding="UTF-8"%>
<%@ page import="java.util.*" %>
<%@ page import="com.google.gson.Gson"%>
<%@ page import="com.google.gson.JsonObject"%>

<%
Gson gsonObj = new Gson();
Map<Object,Object> map = null;
List<Map<Object,Object>> list = new ArrayList<Map<Object,Object>>();

map = new HashMap<Object,Object>(); map.put("label", "2008–09"); map.put("y", 209.7); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2009–10"); map.put("y", 198.3); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2010–11"); map.put("y", 206.1); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2011–12"); map.put("y", 224.8); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2012–13"); map.put("y", 238.2); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2013–14"); map.put("y", 271.6); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2014–15"); map.put("y", 290.2); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2015–16"); map.put("y", 319); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2016–17"); map.put("y", 332.9); list.add(map);

String dataPoints1 = gsonObj.toJson(list);

list = new ArrayList<Map<Object,Object>>();
map = new HashMap<Object,Object>(); map.put("label", "2008–09"); map.put("y", 136.4); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2009–10"); map.put("y", 135); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2010–11"); map.put("y", 143.3); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2011–12"); map.put("y", 162.6); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2012–13"); map.put("y", 173.1); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2013–14"); map.put("y", 206.6); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2014–15"); map.put("y", 225.2); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2015–16"); map.put("y", 254); list.add(map);
map = new HashMap<Object,Object>(); map.put("label", "2016–17"); map.put("y", 267.9); list.add(map);

String dataPoints2 = gsonObj.toJson(list);
%>

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript">
window.onload = function() { 

var chart = new CanvasJS.Chart("chartContainer", {
	animationEnabled: true,
	theme: "dark1",
	title: {
		text: "Australian Thermal Coal Production and Exports"
	},
	axisY: {
		title: "in million tonnes",
		includeZero: true
	},
	toolTip: {
		shared: true
	},
	legend: {
		cursor: "pointer",
		itemclick: toggleDataSeries
	},
	data: [{
		type: "column",
		name: "Production",
		yValueFormatString: "#0.0# million tonnes",
		showInLegend: true,
		dataPoints: <%out.print(dataPoints1);%>
	}, {
		type: "column",
		name: "Exports",
		yValueFormatString: "#0.## million tonnes",
		showInLegend: true,
		dataPoints: <%out.print(dataPoints2);%>
	}]
});
chart.render();

function toggleDataSeries(e) {
	if (typeof (e.dataSeries.visible) === "undefined" || e.dataSeries.visible) {
		e.dataSeries.visible = false;
	}
	else {
		e.dataSeries.visible = true;
	}
	chart.render();
}

}
</script>
</head>
<body>
<div id="chartContainer" style="height: 370px; width: 100%;"></div>
<script src="https://cdn.canvasjs.com/canvasjs.min.js"></script>
</body>
</html>