Insert.java

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;
import java.sql.*;

@WebServlet("/servlet/Insert")
public class Insert extends HttpServlet {
	public void service( HttpServletRequest req, HttpServletResponse res ) throws ServletException, IOException {
		try {
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

			String url = "jdbc:odbc:PostgreSQL";
			String nom = "";
			String mdp = "";
			Connection con = DriverManager.getConnection(url,nom,mdp);

			Statement stmt = con.createStatement();
			stmt.executeUpdate("insert into CLIENTS values(\'" + req.getParameter("NOM") + "\', \'" + req.getParameter("PRENOM") + "\'," + req.getParameter("AGE") + ")" );

			con.close();
		} catch (Exception e) {
			 e.printStackTrace();
		}
		res.sendRedirect("/vide/servlet/Clients");
	}
}