package Conexion;
import java.sql.*;
import javax.swing.JOptionPane;
public class Conexionn {
    static String bd = "recetario";
    static String login = "root";
    static String pass = "090215";
    static String url = "jdbc:mysql://localhost:3306/recetario";
 
    public static void main(String[] args) {
        Connection conn = null;
        try{
            Class.forName("com.mysql.jdbc.Connection");
            conn = (Connection)DriverManager.getConnection(url,login,pass);
            if(conn!=null)
                JOptionPane.showMessageDialog(null,"Conexion a base de datos");
        }catch(SQLException ex){
            JOptionPane.showMessageDialog(null,"No se pudo conectar la base de datos","error",JOptionPane.ERROR_MESSAGE);
        }catch(ClassNotFoundException ex){
            JOptionPane.showMessageDialog(null,"Error al conectar.","error",JOptionPane.ERROR_MESSAGE);
        }
    }
}

edgar@EdgarCompu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.13-0ubuntu0.16.04.2 (Ubuntu)
 
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
 
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
 
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
 
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| recetario          |
| sys                |
+--------------------+
5 rows in set (0.00 sec)
 
mysql> 
 

package Conexion;
import java.sql.*;
import javax.swing.JOptionPane;
public class Conexionn {
    private Connection conex=null;
 
 
    public static void main(String[] args) {
 
         Conexionn.conectar();
 
    }
 
public static Connection conectar(){
 
try{
 
Class.forName("com.mysql.jdbc.Driver");
conex = DriverManager.getConnection("jdbc:mysql://localhost/recetario", "root", "090215");
System.out.println("Ya estas conectado.");
 
}catch(Exception e){
 System.out.println(e.getMessage());
}
return conex;
}
 
}