gantt charts



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gantt charts
1 Answer(s)      8 years ago
Posted in : Java Beginners
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May 18, 2009 at 1:38 PM

Hi Friend,

Take 3 fields in your database table, task,date1,date2 whose data types are varchar, date and date respectively.

Now try the following code:

import java.awt.Color;
import java.util.Date;
import java.util.Calendar;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.*;
import org.jfree.chart.JFreeChart;
import java.sql.*;

public class GanttChartExample {

public static void main( String[] args) {
JFreeChart chart=null ;
TaskSeries schedule1 = new TaskSeries("Scheduled Tasks");
TaskSeries schedule2 = new TaskSeries("Actual Done");
Connection con = null;
String url = "jdbc:mysql://";;
String db = "mysql";
String driver = "com.mysql.jdbc.Driver";
String user = "root";
String pass = "root";
con = DriverManager.getConnection(url+db, user, pass);
Statement st = con.createStatement();
ResultSet rs = st.executeQuery("SELECT * FROM chart");
while ( {
schedule1.add(new Task(rs.getString(1), new SimpleTimePeriod((rs.getDate(2)),(rs.getDate(3)))));

schedule2.add(new Task(rs.getString(1), new SimpleTimePeriod((rs.getDate(2)), (rs.getDate(2)))));
TaskSeriesCollection collection = new TaskSeriesCollection();
IntervalCategoryDataset dataset= collection;

chart = ChartFactory.createGanttChart(
"Gantt Chart Example",
catch(Exception e){
chart.setBackgroundPaint(new Color(0xff,0xff,0xcc));
ChartFrame frame=new ChartFrame("Gantt Chart",chart);


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