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| Packages that use Optional | |
|---|---|
| com.google.common.base | Basic utility libraries and interfaces. | 
| Uses of Optional in com.google.common.base | 
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| Methods in com.google.common.base that return Optional | ||
|---|---|---|
static
 | 
Optional.absent()
Returns an Optional instance with no contained reference. | 
|
static
 | 
Optional.fromNullable(T nullableReference)
If nullableReference is non-null, returns an Optional instance containing that
 reference; otherwise returns absent(). | 
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static
 | 
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. | 
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| 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. | 
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