Método Java + SQL[RESOLVIDO]

public int getId(String login) throws LAFQADaoException {
            ResultSet rs = null;
            try {
                stmt = this.conn.createStatement();
                int idUsuario = -1;
                rs = stmt.executeQuery("SELECT LAST_INSERT_ID() FROM usuario_sistema WHERE login = '" + login + "'");

                if (rs.next()) {
                    idUsuario = rs.getInt(1);
                }
                else {
                    throw new LAFQADaoException("Erro ao pegar a chave primaria");
                }

                rs.close();
                stmt.close();
                System.out.println("Key returned from " +
                                   "'SELECT LAST_INSERT_ID()': " +
                                   idUsuario);
                return idUsuario;
            } 
            catch (SQLException ex) {
                Logger.getLogger(UsuarioSistemaDao.class.getName()).log(Level.SEVERE, null, ex);                
            }
            
    }

init:
deps-jar:
Compiling 5 source files to C:\Documents and Settings\Ricardo\Meus documentos\NetBeansProjects\TesteCadastro\build\classes
C:\Documents and Settings\Ricardo\Meus documentos\NetBeansProjects\TesteCadastro\src\dao\UsuarioSistemaDao.java:97: missing return statement
    }
1 error
FALHA NA CONSTRUÇÃO (tempo total: 1 segundo)