Acesso ao BD FIREBIRD

import java.sql.*; 

public class Bco
{
public static void main(String args[])
{
System.out.println("#testando acesso a banco de dado Interbase ");
Connection conn = null;
String teste = "SELECT NOME FROM CLIENTES;";
try
{
	Class.forName("org.firebirdsql.jdbc.FBDriver");
	conn = DriverManager.getConnection("jdbc:firebirdsql:servidor/3050:/gdb/gjava.gdb", "SYSDBA", "masterkey");
	System.out.println("Sucesso na conexão! Massacre! ");
	Statement stm = conn.createStatement();
	ResultSet rs = stm.executeQuery(teste);
	while (rs.next())
	{
	String linha = rs.getString("NOME");
	System.out.println("Cliente:" +linha);
	}
	
	System.out.println("select realizado ");
	}
	catch(ClassNotFoundException e)
	{
	System.out.println("excessao ClassNotFound...");
	e.printStackTrace();
	}
	catch(SQLException e)
	{
	System.out.println("SQL Exception... Erro dos Bravos");
	e.printStackTrace();
	}
	finally
	{
	try
{
	conn.close();
}	
catch(SQLException onConClose)
{
System.out.println("error on closing");
onConClose.printStackTrace();
}
}
}
}