java.sql.SQLException: No suitable driver found for jdbc: mysql // localhost: 3306 / java

package conexion;

import com.mysql.jdbc.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;



public class conexion {
    Connection co;  
    Statement stm;

    //jdbc:mysql://localhost:3306/java?zeroDateTimeBehavior=convertToNull [root on Default schema]

    public static Connection iniciarConnection(){   
        try {

            Class.forName("com.mysql.jdbc.Driver"); 
            Connection co= DriverManager.getConnection("jdbc:mysql//localhost:3306/java", "root", "");
            Statement stm = co.createStatement();
            System.out.println("Conectado correctamente a la Base de Datos");
            return co;
        } catch (ClassNotFoundException e) {
            System.out.println("Clase no encontrada: "+e);
        } catch (SQLException e) {
            System.out.println("Error de conexion: "+e);
        } catch (Exception e) {
            System.out.println("Error desconocido: "+e);
        }
            return null;
    }
}

Here I put the OutPut:

  

Connection error: java.sql.SQLException: No suitable driver found for   jdbc: mysql // localhost: 3306 / java