ConcurrentModificationException Class

Reference

Definition

Namespace:: Java.Util

Assembly:: Mono.Android.dll

Important

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This exception may be thrown by methods that have detected concurrent modification of an object when such modification is not permissible.

[Android.Runtime.Register("java/util/ConcurrentModificationException", DoNotGenerateAcw=true)]
public class ConcurrentModificationException : Java.Lang.RuntimeException

[<Android.Runtime.Register("java/util/ConcurrentModificationException", DoNotGenerateAcw=true)>]
type ConcurrentModificationException = class
    inherit RuntimeException

Inheritance: Exception

Throwable

Exception

RuntimeException
ConcurrentModificationException

Derived: Java.Nio.FileNio.DirectoryIteratorException

Attributes: RegisterAttribute

Remarks

This exception may be thrown by methods that have detected concurrent modification of an object when such modification is not permissible.

For example, it is not generally permissible for one thread to modify a Collection while another thread is iterating over it. In general, the results of the iteration are undefined under these circumstances. Some Iterator implementations (including those of all the general purpose collection implementations provided by the JRE) may choose to throw this exception if this behavior is detected. Iterators that do this are known as fail-fast iterators, as they fail quickly and cleanly, rather that risking arbitrary, non-deterministic behavior at an undetermined time in the future.

Note that this exception does not always indicate that an object has been concurrently modified by a different thread. If a single thread issues a sequence of method invocations that violates the contract of an object, the object may throw this exception. For example, if a thread modifies a collection directly while it is iterating over the collection with a fail-fast iterator, the iterator will throw this exception.

Note that fail-fast behavior cannot be guaranteed as it is, generally speaking, impossible to make any hard guarantees in the presence of unsynchronized concurrent modification. Fail-fast operations throw ConcurrentModificationException on a best-effort basis. Therefore, it would be wrong to write a program that depended on this exception for its correctness: ConcurrentModificationException should be used only to detect bugs.

Added in 1.2.

Java documentation for java.util.ConcurrentModificationException.

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

ConcurrentModificationException()	Constructs a ConcurrentModificationException with no detail message.
ConcurrentModificationException(IntPtr, JniHandleOwnership)	A constructor used when creating managed representations of JNI objects; called by the runtime.
ConcurrentModificationException(String)	Constructs a `ConcurrentModificationException` with the specified detail message.
ConcurrentModificationException(String, Throwable)	Constructs a new exception with the specified detail message and cause.
ConcurrentModificationException(Throwable)	Constructs a new exception with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`.

Fields

is_generated

(Inherited from Throwable)

Properties

Cause	Returns the cause of this throwable or `null` if the cause is nonexistent or unknown. (Inherited from Throwable)
Class	(Inherited from Throwable)
Handle	The handle to the underlying Android instance. (Inherited from Throwable)
JniIdentityHashCode	(Inherited from Throwable)
JniPeerMembers
LocalizedMessage	Creates a localized description of this throwable. (Inherited from Throwable)
Message	Returns the detail message string of this throwable. (Inherited from Throwable)
PeerReference	(Inherited from Throwable)
StackTrace	(Inherited from Throwable)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.

Methods

AddSuppressed(Throwable)	Appends the specified exception to the exceptions that were suppressed in order to deliver this exception. (Inherited from Throwable)
Dispose()	(Inherited from Throwable)
Dispose(Boolean)	(Inherited from Throwable)
FillInStackTrace()	Fills in the execution stack trace. (Inherited from Throwable)
GetStackTrace()	Provides programmatic access to the stack trace information printed by `#printStackTrace()`. (Inherited from Throwable)
GetSuppressed()	Returns an array containing all of the exceptions that were suppressed, typically by the `try`-with-resources statement, in order to deliver this exception. (Inherited from Throwable)
InitCause(Throwable)	Initializes the cause of this throwable to the specified value. (Inherited from Throwable)
PrintStackTrace()	Prints this throwable and its backtrace to the standard error stream. (Inherited from Throwable)
PrintStackTrace(PrintStream)	Prints this throwable and its backtrace to the specified print stream. (Inherited from Throwable)
PrintStackTrace(PrintWriter)	Prints this throwable and its backtrace to the specified print writer. (Inherited from Throwable)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Throwable)
SetStackTrace(StackTraceElement[])	Sets the stack trace elements that will be returned by `#getStackTrace()` and printed by `#printStackTrace()` and related methods. (Inherited from Throwable)
ToString()	(Inherited from Throwable)
UnregisterFromRuntime()	(Inherited from Throwable)

Explicit Interface Implementations

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

Extension Methods

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

Applies to