Poblemas com mysql

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package jsql;


import java.sql.Connection; 
import java.sql.DriverManager; 
import java.sql.SQLException; 



public class Main {
   
   public static void main(String[] args)    {
       
         // base de dados é "test"     
     
     String url = "jdbc:mysql://localhost/test";     
     String usuario = "root";     
     String senha = "root";       
         
     try{     
         Class.forName("com.mysql.jdbc.Driver");     
         Connection conn = DriverManager.getConnection(url, usuario, senha);     
      
     }     
     catch(SQLException ex){     
       System.out.println("SQLException: " + ex.getMessage());     
       System.out.println("SQLState: " + ex.getSQLState());     
       System.out.println("VendorError: " + ex.getErrorCode());     
          
     }     
     catch(Exception e){     
       System.out.println("Problemas ao tentar conectar com o banco " +   "de dados: " + e);     
       
     }     
   }     
}