package androidLogin;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.mysql.jdbc.Connection;




@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {


    /**
     *
     */
    private static final long serialVersionUID = 1L;


    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        System.out.println("GET METHOD");
        Connection con = DBConnectionHandler.getConnection();
    }


    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }
}

package androidLogin;

import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.mysql.jdbc.Connection;

public class DBConnectionHandler {

    Connection con = null;

    public static Connection getConnection() {
        Connection con = null;

        try {
            Class.forName("com.mysql.jdbc.Driver");//Mysql Connection
            con =(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/loginuser", "host", "13241234");//mysql database

            if(con!=null){
                System.out.println("connected successfully");
            }

        } catch (SQLException | ClassNotFoundException ex) {
            System.out.println(ex);
//            Logger.getLogger(DBConnectionHandler.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println("not connected to database");
        }
        return con;
    }
}