Import jfreechart API.

Create table chart(id(int),score(int)) in MySql database.

chart.jsp:

<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<%@ page import="org.jfree.chart.ChartFactory" %>
<%@ page import="org.jfree.chart.ChartUtilities" %>
<%@ page import="org.jfree.chart.JFreeChart" %>
<%@ page import="org.jfree.chart.plot.PlotOrientation"%>
<%@ page import="org.jfree.data.*" %>
<%@ page import="org.jfree.data.jdbc.JDBCCategoryDataset"%>
<META HTTP-EQUIV="Refresh" CONTENT="2"; URL="http://localhost:8080/examples/chart.jsp">
<%
String query="SELECT * from chart";
JDBCCategoryDataset dataset=new JDBCCategoryDataset("jdbc:mysql://localhost:3306/chart",
"com.mysql.jdbc.Driver","root","root");

dataset.executeQuery( query);
JFreeChart chart = ChartFactory .createBarChart3D(
"Test", 
"Id", 
"Score", 
dataset, 
PlotOrientation.VERTICAL,true, true, false);
try
{
ChartUtilities.saveChartAsJPEG(new File("C:/chart.jpg"), chart, 400, 300);
}
catch (IOException e)
{
System.out.println("Problem in creating chart.");
}
%>