How to connect the SQL Server online database by JDBC in Netbeans

I have a question about how to generate the Java JDBC connection URL in the Netbeans IDE to connect to an online SQL Server database.

Below is my code, which did not generate a connection like the database:

  package teste.br.com.DAO;

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

 public class ConexaoSQLServer {

    Connection con = null;
    String driverDB = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

    String rota = "jdbc:sqlserver//sqlserver01.BASE_DADOS.com.br;databaseName=NOME;user=USER;"
            + "password=PASS;";

    public boolean ConectarBD(){
        try{
            Class.forName(driverDB);
            con = DriverManager.getConnection(rota);
            return true;
        }
        catch(Exception ex){
            ex.getMessage();
            return false;

        }
    }
}

When debugging netbeans, I noticed that the problem is connecting to the online database.