Membuat Koneksi Ke Database SQL di Netbeans

LAngsung aja ya Bro
 
public class Transaksi extends javax.swing.JFrame {
public Connection conn;
public Statement st;

public void koneksi(){
try{
        Class.forName("com.mysql.jdbc.Driver");
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/tokokelontong","root","");
        st = conn.createStatement();
    }catch (Exception e){
        JOptionPane.showMessageDialog(null,"koneksi gagal..");
        System.out.println(e.getMessage());  
    }
if (conn != null)
System.out.println("Berhasil Koneksi");
else
System.out.println("Gagal Koneksi");    
}