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Uses of Class com.google.common.base.Optional (Guava: Google Core Libraries for Java 11.0.1 API)
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Uses of Class
com.google.common.base.Optional
Packages that use Optional
com.google.common.base
Basic utility libraries and interfaces.
com.google.common.collect
This package contains generic collection interfaces and implementations, and
other utilities for working with collections.
Uses of Optional in com.google.common.base
Methods in com.google.common.base that return Optional
static
<T> Optional<T>
Optional.absent()
Returns an Optional instance with no contained reference.
static
<T> Optional<T>
Optional.fromNullable(T nullableReference)
If nullableReference is non-null, returns an Optional instance containing that
reference; otherwise returns absent().
static
<T> Optional<T>
Optional.of(T reference)
Returns an Optional instance containing the given non-null reference.
abstract Optional<T>
Optional.or(Optional<? extends T> secondChoice)
Returns this Optional if it has a value present; secondChoice
otherwise.
Methods in com.google.common.base with parameters of type Optional
abstract Optional<T>
Optional.or(Optional<? extends T> secondChoice)
Returns this Optional if it has a value present; secondChoice
otherwise.
Method parameters in com.google.common.base with type arguments of type Optional
static
<T> Iterable<T>
Optional.presentInstances(Iterable<Optional<T>> optionals)
Returns the value of each present instance from the supplied optionals, in order,
skipping over occurrences of absent().
Uses of Optional in com.google.common.collect
Methods in com.google.common.collect that return Optional
static
<T> Optional<T>
Iterables.tryFind(Iterable<T> iterable,
Predicate<? super T> predicate)
Returns an Optional containing the first element in iterable that satisfies the given predicate, if such an element exists.
static
<T> Optional<T>
Iterators.tryFind(Iterator<T> iterator,
Predicate<? super T> predicate)
Returns an Optional containing the first element in iterator that satisfies the given predicate, if such an element exists.
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