server side

import javax.swing.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.sql.*;

public class Server {
    public Connection koneksi;

    public Server() throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.jdbc.Driver");
        koneksi = DriverManager.getConnection("jdbc:mysql://localhost:3306/pulsaapp","root","");
    }

    public void Login(Integer id, String password) throws SQLException, ClassNotFoundException {
        String sql = "SELECT id,password FROM karyawan WHERE id = ? AND password = ?";
        PreparedStatement statement = koneksi.prepareStatement(sql);
        statement.setInt(1,id);
        statement.setString(2,password);
        ResultSet rs = statement.executeQuery();
        if(rs.next()) {
            new Dashboard();
        } else {
            JOptionPane.showMessageDialog(null,"Id Atau Password Salah");
        }
    }



    public static void main(String[] args) throws IOException {

    }
}