test.java

@Data
@AllArgsConstructor
class Product {
    private Long codigoEmpresa;
    private Long codigoProduto;
}

@Test
public void test() {

    Long filterCodigoEmpresa = 1L;

    List<Product> products = Arrays.asList(
            new Product(1L, 1L),
            new Product(1L, 2L),
            new Product(2L, 3L),
            new Product(2L, 4L),
            new Product(1L, 5L),
            new Product(1L, 6L)
    );


    List<Product> productsByFilter = products
            .stream()
            .filter(product -> product.getCodigoEmpresa() == filterCodigoEmpresa)
            .collect(Collectors.toList());

}