Integer Class

Definition

Namespace:: Java.Lang

Assembly:: Mono.Android.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

The Integer class wraps a value of the primitive type int in an object.

[Android.Runtime.Register("java/lang/Integer", DoNotGenerateAcw=true)]
public sealed class Integer : Java.Lang.Number, IConvertible, IDisposable, Java.Interop.IJavaPeerable, Java.Lang.IComparable

[<Android.Runtime.Register("java/lang/Integer", DoNotGenerateAcw=true)>]
type Integer = class
    inherit Number
    interface IConvertible
    interface IComparable
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Inheritance: Object

Object

Number
Integer

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable IComparable IConvertible IDisposable

Remarks

The Integer class wraps a value of the primitive type int in an object. An object of type Integer contains a single field whose type is int.

In addition, this class provides several methods for converting an int to a String and a String to an int, as well as other constants and methods useful when dealing with an int.

<!-- Android-removed: paragraph on ValueBased

This is a value-based class; programmers should treat instances that are #equals(Object) equal as interchangeable and should not use instances for synchronization, or unpredictable behavior may occur. For example, in a future release, synchronization may fail. -->

Implementation note: The implementations of the "bit twiddling" methods (such as #highestOneBit(int) highestOneBit and #numberOfTrailingZeros(int) numberOfTrailingZeros) are based on material from Henry S. Warren, Jr.'s Hacker's Delight, (Addison Wesley, 2002).

Added in 1.0.

Java documentation for java.lang.Integer.

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

Name	Description
Integer(Int32)	Constructs a newly allocated `Integer` object that represents the specified `int` value.
Integer(String)	Constructs a newly allocated `Integer` object that represents the `int` value indicated by the `String` parameter.

Fields

Name	Description
Bytes	The number of bytes used to represent an `int` value in two's complement binary form.
MaxValue	A constant holding the maximum value an `int` can have, 2<sup>31</sup>-1.
MinValue	A constant holding the minimum value an `int` can have, -2<sup>31</sup>.
Size	The number of bits used to represent an `int` value in two's complement binary form.

Properties

Name	Description
Class	Returns the runtime class of this `Object`. (Inherited from Object)
Handle	The handle to the underlying Android instance. (Inherited from Object)
JniIdentityHashCode	Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object)
JniPeerMembers	Gets the JNI metadata used to invoke members of this Java peer.
PeerReference	Gets the JNI object reference for this Java peer. (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 Number)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Number)
Type	The `Class` instance representing the primitive type `int`.

Methods

Name	Description
BitCount(Int32)	Returns the number of one-bits in the two's complement binary representation of the specified `int` value.
ByteValue()	Returns the value of the specified number as a `byte`. (Inherited from Number)
Clone()	Creates and returns a copy of this object. (Inherited from Object)
Compare(Int32, Int32)	Compares two `int` values numerically.
CompareTo(Integer)	Compares two `Integer` objects numerically.
CompareUnsigned(Int32, Int32)	Compares two `int` values numerically treating the values as unsigned.
Compress(Int32, Int32)	Returns the value obtained by compressing the bits of the specified `int` value, `i`, in accordance with the specified bit mask.
Decode(String)	Decodes a `String` into an `Integer`.
Dispose()	Releases the resources held by this Java peer. (Inherited from Object)
Dispose(Boolean)	Releases the resources held by this Java peer. (Inherited from Object)
DivideUnsigned(Int32, Int32)	Returns the unsigned quotient of dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.
DoubleValue()	Returns the value of this `Integer` as a `double` after a widening primitive conversion.
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
Expand(Int32, Int32)	Returns the value obtained by expanding the bits of the specified `int` value, `i`, in accordance with the specified bit mask.
FloatValue()	Returns the value of this `Integer` as a `float` after a widening primitive conversion.
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
GetInteger(String, Int32)	Determines the integer value of the system property with the specified name.
GetInteger(String, Integer)	Returns the integer value of the system property with the specified name.
GetInteger(String)	Determines the integer value of the system property with the specified name.
HashCode(Int32)	Returns a hash code for an `int` value; compatible with `Integer.hashCode()`.
HighestOneBit(Int32)	Returns an `int` value with at most a single one-bit, in the position of the highest-order ("leftmost") one-bit in the specified `int` value.
IntValue()	Returns the value of this `Integer` as an `int`.
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)
LongValue()	Returns the value of this `Integer` as a `long` after a widening primitive conversion.
LowestOneBit(Int32)	Returns an `int` value with at most a single one-bit, in the position of the lowest-order ("rightmost") one-bit in the specified `int` value.
Max(Int32, Int32)	Returns the greater of two `int` values as if by calling `Math#max(int, int) Math.max`.
Min(Int32, Int32)	Returns the smaller of two `int` values as if by calling `Math#min(int, int) Math.min`.
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)
NumberOfLeadingZeros(Int32)	Returns the number of zero bits preceding the highest-order ("leftmost") one-bit in the two's complement binary representation of the specified `int` value.
NumberOfTrailingZeros(Int32)	Returns the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified `int` value.
ParseInt(ICharSequence, Int32, Int32, Int32)	Parses the `CharSequence` argument as a signed `int` in the specified `radix`, beginning at the specified `beginIndex` and extending to `endIndex - 1`.
ParseInt(String, Int32, Int32, Int32)	Parses the `CharSequence` argument as a signed `int` in the specified `radix`, beginning at the specified `beginIndex` and extending to `endIndex - 1`.
ParseInt(String, Int32)	Parses the string argument as a signed integer in the radix specified by the second argument.
ParseInt(String)	Parses the string argument as a signed decimal integer.
ParseUnsignedInt(ICharSequence, Int32, Int32, Int32)	Parses the `CharSequence` argument as an unsigned `int` in the specified `radix`, beginning at the specified `beginIndex` and extending to `endIndex - 1`.
ParseUnsignedInt(String, Int32, Int32, Int32)	Parses the `CharSequence` argument as an unsigned `int` in the specified `radix`, beginning at the specified `beginIndex` and extending to `endIndex - 1`.
ParseUnsignedInt(String, Int32)	Parses the string argument as an unsigned integer in the radix specified by the second argument.
ParseUnsignedInt(String)	Parses the string argument as an unsigned decimal integer.
RemainderUnsigned(Int32, Int32)	Returns the unsigned remainder from dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.
Reverse(Int32)	Returns the value obtained by reversing the order of the bits in the two's complement binary representation of the specified `int` value.
ReverseBytes(Int32)	Returns the value obtained by reversing the order of the bytes in the two's complement representation of the specified `int` value.
RotateLeft(Int32, Int32)	Returns the value obtained by rotating the two's complement binary representation of the specified `int` value left by the specified number of bits.
RotateRight(Int32, Int32)	Returns the value obtained by rotating the two's complement binary representation of the specified `int` value right by the specified number of bits.
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
ShortValue()	Returns the value of the specified number as a `short`. (Inherited from Number)
Signum(Int32)	Returns the signum function of the specified `int` value.
Sum(Int32, Int32)	Adds two integers together as per the + operator.
ToArray<T>()	Creates a managed array from this Java array wrapper. (Inherited from Object)
ToBinaryString(Int32)	Returns a string representation of the integer argument as an unsigned integer in base 2.
ToHexString(Int32)	Returns a string representation of the integer argument as an unsigned integer in base 16.
ToOctalString(Int32)	Returns a string representation of the integer argument as an unsigned integer in base 8.
ToString()	Returns a string representation of the object. (Inherited from Object)
ToString(Int32, Int32)	Returns a string representation of the first argument in the radix specified by the second argument.
ToString(Int32)	Returns a `String` object representing the specified integer.
ToUnsignedLong(Int32)	Converts the argument to a `long` by an unsigned conversion.
ToUnsignedString(Int32, Int32)	Returns a string representation of the first argument as an unsigned integer value in the radix specified by the second argument.
ToUnsignedString(Int32)	Returns a string representation of the argument as an unsigned decimal value.
UnregisterFromRuntime()	Unregisters this Java peer from the interop runtime. (Inherited from Object)
ValueOf(Int32)	Returns an `Integer` instance representing the specified `int` value.
ValueOf(String, Int32)	Returns an `Integer` object holding the value extracted from the specified `String` when parsed with the radix given by the second argument.
ValueOf(String)	Returns an `Integer` object holding the value of the specified `String`.
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)

Operators

Name	Description
Explicit(Integer to Int32)	Converts the specified `Integer` value to `Int32`.

Explicit Interface Implementations

Name	Description
IComparable.CompareTo(Object)	Compares this value with the specified object for ordering.
IConvertible.GetTypeCode()	Returns the type code for this value.
IConvertible.ToBoolean(IFormatProvider)	Converts this value to `Boolean`.
IConvertible.ToByte(IFormatProvider)	Converts this value to `Byte`.
IConvertible.ToChar(IFormatProvider)	Converts this value to `Char`.
IConvertible.ToDateTime(IFormatProvider)	Conversion to `DateTime` is unsupported and throws InvalidCastException.
IConvertible.ToDecimal(IFormatProvider)	Converts this value to `Decimal`.
IConvertible.ToDouble(IFormatProvider)	Converts this value to `Double`.
IConvertible.ToInt16(IFormatProvider)	Converts this value to `Int16`.
IConvertible.ToInt32(IFormatProvider)	Converts this value to `Int32`.
IConvertible.ToInt64(IFormatProvider)	Converts this value to `Int64`.
IConvertible.ToSByte(IFormatProvider)	Converts this value to `SByte`.
IConvertible.ToSingle(IFormatProvider)	Converts this value to `Single`.
IConvertible.ToString(IFormatProvider)	Converts this value to `String`.
IConvertible.ToType(Type, IFormatProvider)	Converts this value to the type specified by `conversionType`.
IConvertible.ToUInt16(IFormatProvider)	Converts this value to `UInt16`.
IConvertible.ToUInt32(IFormatProvider)	Converts this value to `UInt32`.
IConvertible.ToUInt64(IFormatProvider)	Converts this value to `UInt64`.
IJavaPeerable.Disposed()	Notifies the interop runtime that this managed peer has been disposed. (Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	Releases this Java peer unless it is retained by another managed reference. (Inherited from Object)
IJavaPeerable.Finalized()	Notifies the interop runtime that this managed peer has been finalized. (Inherited from Object)
IJavaPeerable.JniManagedPeerState	Gets the state that describes the relationship between this managed peer and its JNI reference. (Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	Sets the interop identity hash code for this Java peer. (Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	Sets the managed and JNI peer state for this Java peer. (Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	Sets the JNI object reference used by this managed peer. (Inherited from Object)

Extension Methods

Name	Description
GetJniTypeName(IJavaPeerable)	Gets the JNI name of the type of the instance `self`.
JavaAs<TResult>(IJavaPeerable)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.
JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
TryJavaCast<TResult>(IJavaPeerable, TResult)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.

Applies to