OptionalDouble Class

Reference

Definition

Namespace:: Java.Util

Assembly:: Mono.Android.dll

Important

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A container object which may or may not contain a double value.

[Android.Runtime.Register("java/util/OptionalDouble", ApiSince=24, DoNotGenerateAcw=true)]
public sealed class OptionalDouble : Java.Lang.Object

[<Android.Runtime.Register("java/util/OptionalDouble", ApiSince=24, DoNotGenerateAcw=true)>]
type OptionalDouble = class
    inherit Object

Inheritance: Object

Object
OptionalDouble

Attributes: RegisterAttribute

Remarks

A container object which may or may not contain a double value. If a value is present, isPresent() returns true. If no value is present, the object is considered empty and isPresent() returns false.

Additional methods that depend on the presence or absence of a contained value are provided, such as #orElse(double) orElse() (returns a default value if no value is present) and #ifPresent(DoubleConsumer) ifPresent() (performs an action if a value is present).

Added in 1.8.

Java documentation for java.util.OptionalDouble.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Properties

AsDouble	If a value is present, returns the value, otherwise throws `NoSuchElementException`.
Class	Returns the runtime class of this `Object`. (Inherited from Object)
Handle	The handle to the underlying Android instance. (Inherited from Object)
IsEmpty	If a value is not present, returns `true`, otherwise `false`.
IsPresent	If a value is present, returns `true`, otherwise `false`.
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
PeerReference	(Inherited from Object)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)

Methods

Clone()	Creates and returns a copy of this object. (Inherited from Object)
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Empty()	Returns an empty `OptionalDouble` instance.
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
IfPresent(IDoubleConsumer)	If a value is present, performs the given action with the value, otherwise does nothing.
IfPresentOrElse(IDoubleConsumer, IRunnable)	If a value is present, performs the given action with the value, otherwise performs the given empty-based action.
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
Of(Double)	Returns an `OptionalDouble` describing the given value.
OrElse(Double)	If a value is present, returns the value, otherwise returns `other`.
OrElseGet(IDoubleSupplier)	If a value is present, returns the value, otherwise returns the result produced by the supplying function.
OrElseThrow()	If a value is present, returns the value, otherwise throws `NoSuchElementException`.
OrElseThrow(ISupplier)	If a value is present, returns the value, otherwise throws an exception produced by the exception supplying function.
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	(Inherited from Object)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to