Cannot understand why this method is unresolved Cannot understand why this method is unresolved spring spring

Cannot understand why this method is unresolved


java spring

It looks like this book just contains an error, it does not list the filterByType() method. It's not a Spring method. Here you go:

private List<Ingredient> filterByType(List<Ingredient> ingredients, Type type) {    return ingredients.stream()            .filter(x -> x.getType().equals(type))            .collect(Collectors.toList());}

Source: Manning Publications

java spring

If you do not prefer readability:

  Arrays.stream(types).forEach(a -> model.addAttribute(a.toString().toLowerCase(Locale.ROOT), ingredients.stream().filter(i -> a.equals(i.getType())).collect(Collectors.toList())));

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