All Superinterfaces:

Supplier<OptionalLong>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface OptionalLongSupplier
extends Supplier<OptionalLong>
```
Variation of LongSupplier that returns OptionalLong instead of the raw value. OptionalLongSupplier is typically obtained from ExceptionHandler.fromLongSupplier(LongSupplier), in which case its return value is empty when the underlying LongSupplier throws an exception. See noexception tutorial.

See Also:

ExceptionHandler.fromLongSupplier(LongSupplier), LongSupplier

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`OptionalLong`	`get()`	Variation of `LongSupplier.getAsLong()` that returns `OptionalLong`.
`default LongSupplier`	`orElse(long result)`	Converts this `OptionalLongSupplier` to plain `LongSupplier` using default value.
`default LongSupplier`	`orElseGet(LongSupplier source)`	Converts this `OptionalLongSupplier` to plain `LongSupplier` using fallback `LongSupplier`.

- Method Detail
  - get
```
OptionalLong get()
```
    Variation of LongSupplier.getAsLong() that returns OptionalLong. If this OptionalLongSupplier is obtained from ExceptionHandler.fromLongSupplier(LongSupplier), the OptionalLong will be empty only if the underlying LongSupplier throws. Otherwise the returned OptionalLong just wraps the return value of underlying LongSupplier.
    
    Specified by:
    
    get in interface Supplier<OptionalLong>
    
    Returns:
    
    OptionalLong typically wrapping return value of LongSupplier.getAsLong(), or an empty OptionalLong (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromLongSupplier(LongSupplier), LongSupplier.getAsLong()
  - orElse
```
default LongSupplier orElse(long result)
```
    Converts this OptionalLongSupplier to plain LongSupplier using default value. The returned LongSupplier will unwrap present value from the OptionalLong if possible, or return result if the OptionalLong is empty.
    
    Parameters:
    
    result - default value to return instead of an empty OptionalLong
    
    Returns:
    
    plain LongSupplier that either unwraps OptionalLong or returns default value
    
    See Also:
    
    orElseGet(LongSupplier), OptionalLong.orElse(long)
  - orElseGet
```
default LongSupplier orElseGet(LongSupplier source)
```
    Converts this OptionalLongSupplier to plain LongSupplier using fallback LongSupplier. The returned LongSupplier will unwrap present value from the OptionalLong if possible, or fall back to calling source if the OptionalLong is empty.
    
    Parameters:
    
    source - LongSupplier to query for fallback value when OptionalLong is empty
    
    Returns:
    
    plain LongSupplier that either unwraps OptionalLong or falls back to source
    
    See Also:
    
    orElse(long), OptionalLong.orElseGet(LongSupplier)

Interface OptionalLongSupplier

Method Summary

Method Detail

get

orElse

orElseGet