How to implement the DELETE method of the HTTP protocol in a Web Service REST in Java

I'm in doubt as to how to implement the DELETE method of the HTTP web service REST JAVA protocol, when I run it says I'm running the GET method and not DELETE.

// Method Called in Web Service

 public void remove(Promocao promocao) {

        id_conexao = N.Conectar();

        String sql = "delete from promocao where idpromocao=?";

        try {

            stmt = id_conexao.prepareStatement(sql);
            stmt.setInt(1, promocao.getIdpromocao());

            //executa
            stmt.execute();

            System.out.println("Promocao Excluida");

        } catch (SQLException e) {
            System.err.println("ERRO ao excluir promoção - " + e);

        } finally {
            N.Desconectar();
        }
    }

// DELETE in Java Web Service

    @DELETE
    @Path("excluirPromocao")
     public void excluir(String content){    

      Gson g = new Gson();
        Promocao P = (Promocao) g.fromJson(content, Promocao.class);
        PromocaoOp promo = new PromocaoOp();  
        promo.remove(P);

    }