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| package test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
public class LineChartTest{
public static void main(String arg[]) throws NumberFormatException, SQLException, ClassNotFoundException{
String url = "jdbc:mysql://localhost:3306/test";
String username = "root";
String password = null ;
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(url,username,password);
Statement stmt = con.createStatement();
try{
Class.forName("com.mysql.jdbc.Driver");
}
catch (ClassNotFoundException e){
System.out.println("Pilote non retrouvé");
}
try{
con= DriverManager.getConnection(url,username,password);
}
catch(SQLException sqle){System.out.println("Erreur lors de la connexion à la base de données");
//destroy();
}
XYSeries series = new XYSeries("Valeurs");
try {
con= DriverManager.getConnection(url,username,password);
stmt = con.createStatement();
}
catch (SQLException sqle){System.out.println("Erreur de requete");}
ResultSet rs = (ResultSet) stmt.executeQuery("select * from CPUtest");
while(rs.next()){
double v1=rs.getDouble("datex");
double v2=rs.getDouble("sample");
series.add(v1,v2);
}
rs.close();
/*
series.add(rs.getString("datex"),rs1.getString("value1"));
series.add(20.0, 20.0);
series.add(40.0, 25.0);
series.add(55.0, 50.0);
series.add(70.0, 65.0);
*/
XYDataset xyDataset = new XYSeriesCollection(series);
JFreeChart chart = ChartFactory.createXYLineChart
("Moniteur CPU", "value1", "value2",
xyDataset, PlotOrientation.VERTICAL, true, true, false);
ChartFrame frame1=new ChartFrame("Moniteur CPU",chart);
frame1.setVisible(true);
frame1.setSize(700,400);
}
} |
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