Boolean Class

Definition

Namespace:: Java.Lang

Assembly:: Mono.Android.dll

Important

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The Boolean class wraps a value of the primitive type boolean in an object.

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

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

Inheritance: Object

Object
Boolean

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable ISerializable IComparable IConvertible IDisposable

Remarks

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

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

<!-- 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. -->

Added in 1.0.

Java documentation for java.lang.Boolean.

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
Boolean(Boolean)	Allocates a `Boolean` object representing the `value` argument.
Boolean(String)	Allocates a `Boolean` object representing the value `true` if the string argument is not `null` and is equal, ignoring case, to the string `"true"`.

Properties

Name	Description
Class	Returns the runtime class of this `Object`. (Inherited from Object)
False	The `Boolean` object corresponding to the primitive value `false`.
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 Object)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
True	The `Boolean` object corresponding to the primitive value `true`.
Type	The Class object representing the primitive type boolean.

Methods

Name	Description
BooleanValue()	Returns the value of this `Boolean` object as a boolean primitive.
Clone()	Creates and returns a copy of this object. (Inherited from Object)
Compare(Boolean, Boolean)	Compares two `boolean` values.
CompareTo(Boolean)	Compares this `Boolean` instance with another.
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)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetBoolean(String)	Returns `true` if and only if the system property named by the argument exists and is equal to, ignoring case, the string `"true"`.
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
HashCode(Boolean)	Returns a hash code for a `boolean` value; compatible with `Boolean.hashCode()`.
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)
LogicalAnd(Boolean, Boolean)	Returns the result of applying the logical AND operator to the specified `boolean` operands.
LogicalOr(Boolean, Boolean)	Returns the result of applying the logical OR operator to the specified `boolean` operands.
LogicalXor(Boolean, Boolean)	Returns the result of applying the logical XOR operator to the specified `boolean` operands.
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)
ParseBoolean(String)	Parses the string argument as a boolean.
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
ToArray<T>()	Creates a managed array from this Java array wrapper. (Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
ToString(Boolean)	Returns a `String` object representing the specified boolean.
UnregisterFromRuntime()	Unregisters this Java peer from the interop runtime. (Inherited from Object)
ValueOf(Boolean)	Returns a `Boolean` instance representing the specified `boolean` value.
ValueOf(String)	Returns a `Boolean` with a value represented by 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(Boolean to Boolean)	Converts the specified `Boolean` value to `Boolean`.

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)	Conversion to `Char` is unsupported and throws InvalidCastException.
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