LongSummaryStatistics Class

Reference

Definition

Namespace:: Java.Util

Assembly:: Mono.Android.dll

Important

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A state object for collecting statistics such as count, min, max, sum, and average.

[Android.Runtime.Register("java/util/LongSummaryStatistics", ApiSince=24, DoNotGenerateAcw=true)]
public class LongSummaryStatistics : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.Util.Functions.IIntConsumer, Java.Util.Functions.ILongConsumer

[<Android.Runtime.Register("java/util/LongSummaryStatistics", ApiSince=24, DoNotGenerateAcw=true)>]
type LongSummaryStatistics = class
    inherit Object
    interface IIntConsumer
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable
    interface ILongConsumer

Inheritance: Object

Object
LongSummaryStatistics

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable IIntConsumer ILongConsumer IDisposable

Remarks

A state object for collecting statistics such as count, min, max, sum, and average.

This class is designed to work with (though does not require) java.util.stream streams. For example, you can compute summary statistics on a stream of longs with:

{@code
            LongSummaryStatistics stats = longStream.collect(LongSummaryStatistics::new,
                                                             LongSummaryStatistics::accept,
                                                             LongSummaryStatistics::combine);
            }

LongSummaryStatistics can be used as a java.util.stream.Stream#collect(Collector) reduction target for a java.util.stream.Stream stream. For example:

{@code
            LongSummaryStatistics stats = people.stream()
                                                .collect(Collectors.summarizingLong(Person::getAge));
            }

This computes, in a single pass, the count of people, as well as the minimum, maximum, sum, and average of their ages.

Added in 1.8.

Java documentation for java.util.LongSummaryStatistics.

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.

Constructors

LongSummaryStatistics()	Constructs an empty instance with zero count, zero sum, `Long.MAX_VALUE` min, `Long.MIN_VALUE` max and zero average.
LongSummaryStatistics(Int64, Int64, Int64, Int64)	Constructs a non-empty instance with the specified `count`, `min`, `max`, and `sum`.
LongSummaryStatistics(IntPtr, JniHandleOwnership)

Properties

Average	Returns the arithmetic mean of values recorded, or zero if no values have been recorded.
Class	Returns the runtime class of this `Object`. (Inherited from Object)
Count	Returns the count of values recorded.
Handle	The handle to the underlying Android instance. (Inherited from Object)
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
Max	Returns the maximum value recorded, or `Long.MIN_VALUE` if no values have been recorded
Min	Returns the minimum value recorded, or `Long.MAX_VALUE` if no values have been recorded.
PeerReference	(Inherited from Object)
Sum	Returns the sum of values recorded, or zero if no values have been recorded.
ThresholdClass
ThresholdType

Methods

Accept(Int32)	Records a new `int` value into the summary information.
Accept(Int64)	Records a new `long` value into the summary information.
Clone()	Creates and returns a copy of this object. (Inherited from Object)
Combine(LongSummaryStatistics)	Combines the state of another `LongSummaryStatistics` into this one.
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
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)
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)
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, 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)
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)

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

次の方法で共有