optional throw if present
Optional.of(usuarios.findByEmail(usuario.getEmail())).ifPresent(param -> {
throw new IllegalArgumentException("Only Strings allowed in path parameters.")
});optional throw if present
Optional.of(usuarios.findByEmail(usuario.getEmail())).ifPresent(param -> {
throw new IllegalArgumentException("Only Strings allowed in path parameters.")
});stream optional if present anymatch
List<String> filteredList = listOfOptionals.stream()
.filter(Optional::isPresent)
.map(Optional::get)
.collect(Collectors.toList());stream optional if present anymatch
List<Optional<String>> listOfOptionals = Arrays.asList(
Optional.empty(), Optional.of("foo"), Optional.empty(), Optional.of("bar"));Copyright © 2021 Codeinu
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