connect database java

//script made by arfy slowy
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;

public class connect { // koneksi ke database
    private static Connection connect;
    public static Connection koneksiDB() throws SQLException {
        if(mysqlkonek==null){
            try {
                String DB="jdbc:mysql://localhost:3306/nama_database"; // delta_db database
                String user="root"; // user database
                String pass=""; // password database
                DriverManager.registerDriver(new com.mysql.jdbc.Driver());
                mysqlkonek = (Connection) DriverManager.getConnection(DB,user,pass);
            } catch (Exception e) {
                JOptionPane.showMessageDialog(null,"gagal koneksi");
            }
        }
        return connect;
    }
}