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Added in API level 1

Summary: Ctors | Inherited Methods | [Expand All]

IOException

public class IOException
extends Exception

java.lang.Object
↳	java.lang.Throwable
	↳	java.lang.Exception
		↳	java.io.IOException

Known Direct Subclasses

Base64DataException, CharConversionException, CharacterCodingException, ClosedChannelException, EOFException, FileLockInterruptionException, FileNotFoundException, HttpRetryException, InterruptedIOException, InvalidPropertiesFormatException, MalformedJsonException, MalformedURLException, ObjectStreamException, ParcelFileDescriptor.FileDescriptorDetachedException, ProtocolException, and 9 others.

Base64DataException	This exception is thrown by `Base64InputStream` or `Base64OutputStream` when an error is detected in the data being decoded.
CharConversionException	Base class for character conversion exceptions.
CharacterCodingException	Checked exception thrown when a character encoding or decoding error occurs.
ClosedChannelException	Checked exception thrown when an attempt is made to invoke or complete an I/O operation upon channel that is closed, or at least closed to that operation.
EOFException	Signals that an end of file or end of stream has been reached unexpectedly during input.
FileLockInterruptionException	Checked exception received by a thread when another thread interrupts it while it is waiting to acquire a file lock.
FileNotFoundException	Signals that an attempt to open the file denoted by a specified pathname has failed.
HttpRetryException	Thrown to indicate that a HTTP request needs to be retried but cannot be retried automatically, due to streaming mode being enabled.
InterruptedIOException	Signals that an I/O operation has been interrupted.
InvalidPropertiesFormatException	Thrown to indicate that an operation could not complete because the input did not conform to the appropriate XML document type for a collection of properties, as per the `Properties` specification.
MalformedJsonException	Thrown when a reader encounters malformed JSON.
MalformedURLException	Thrown to indicate that a malformed URL has occurred.
ObjectStreamException	Superclass of all exceptions specific to Object Stream classes.
ParcelFileDescriptor.FileDescriptorDetachedException	Exception that indicates that the file descriptor was detached.
ProtocolException	Thrown to indicate that there is an error in the underlying protocol, such as a TCP error.
SSLException	Indicates some kind of error detected by an SSL subsystem.
SocketException	Thrown to indicate that there is an error creating or accessing a Socket.
SyncFailedException	Signals that a sync operation has failed.
TagLostException
UTFDataFormatException	Signals that a malformed string in modified UTF-8 format has been read in a data input stream or by any class that implements the data input interface.
UnknownHostException	Thrown to indicate that the IP address of a host could not be determined.
UnknownServiceException	Thrown to indicate that an unknown service exception has occurred.
UnsupportedEncodingException	The Character Encoding is not supported.
ZipException	Signals that a Zip exception of some sort has occurred.

Known Indirect Subclasses

AsynchronousCloseException, BindException, ClosedByInterruptException, ConnectException, ConnectTimeoutException, InvalidClassException, InvalidObjectException, JarException, MalformedInputException, NoRouteToHostException, NotActiveException, NotSerializableException, OptionalDataException, PortUnreachableException, SSLHandshakeException, and 7 others.

AsynchronousCloseException	Checked exception received by a thread when another thread closes the channel or the part of the channel upon which it is blocked in an I/O operation.
BindException	Signals that an error occurred while attempting to bind a socket to a local address and port.
ClosedByInterruptException	Checked exception received by a thread when another thread interrupts it while it is blocked in an I/O operation upon a channel.
ConnectException	Signals that an error occurred while attempting to connect a socket to a remote address and port.
ConnectTimeoutException	This class was deprecated in API level 22. Please use `openConnection()` instead. Please visit this webpage for further details.
InvalidClassException	Thrown when the Serialization runtime detects one of the following problems with a Class.
InvalidObjectException	Indicates that one or more deserialized objects failed validation tests.
JarException	Signals that an error of some sort has occurred while reading from or writing to a JAR file.
MalformedInputException	Checked exception thrown when an input byte sequence is not legal for given charset, or an input character sequence is not a legal sixteen-bit Unicode sequence.
NoRouteToHostException	Signals that an error occurred while attempting to connect a socket to a remote address and port.
NotActiveException	Thrown when serialization or deserialization is not active.
NotSerializableException	Thrown when an instance is required to have a Serializable interface.
OptionalDataException	Exception indicating the failure of an object read operation due to unread primitive data, or the end of data belonging to a serialized object in the stream.
PortUnreachableException	Signals that an ICMP Port Unreachable message has been received on a connected datagram.
SSLHandshakeException	Indicates that the client and server could not negotiate the desired level of security.
SSLKeyException	Reports a bad SSL key.
SSLPeerUnverifiedException	Indicates that the peer's identity has not been verified.
SSLProtocolException	Reports an error in the operation of the SSL protocol.
SocketTimeoutException	Signals that a timeout has occurred on a socket read or accept.
StreamCorruptedException	Thrown when control information that was read from an object stream violates internal consistency checks.
UnmappableCharacterException	Checked exception thrown when an input character (or byte) sequence is valid but cannot be mapped to an output byte (or character) sequence.
WriteAbortedException	Signals that one of the ObjectStreamExceptions was thrown during a write operation.

Signals that an I/O exception of some sort has occurred. This class is the general class of exceptions produced by failed or interrupted I/O operations.

See also:

InputStream
OutputStream

Summary

Public constructors
`IOException()` Constructs an `IOException` with `null` as its error detail message.
`IOException(String message)` Constructs an `IOException` with the specified detail message.
`IOException(String message, Throwable cause)` Constructs an `IOException` with the specified detail message and cause.
`IOException(Throwable cause)` Constructs an `IOException` with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`).

Inherited methods

From class


  
    java.lang.Throwable

`final void`	`addSuppressed(Throwable exception)` Appends the specified exception to the exceptions that were suppressed in order to deliver this exception.
`Throwable`	`fillInStackTrace()` Fills in the execution stack trace.
`Throwable`	`getCause()` Returns the cause of this throwable or `null` if the cause is nonexistent or unknown.
`String`	`getLocalizedMessage()` Creates a localized description of this throwable.
`String`	`getMessage()` Returns the detail message string of this throwable.
`StackTraceElement[]`	`getStackTrace()` Provides programmatic access to the stack trace information printed by `printStackTrace()`.
`final 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.
`Throwable`	`initCause(Throwable cause)` Initializes the cause of this throwable to the specified value.
`void`	`printStackTrace()` Prints this throwable and its backtrace to the standard error stream.
`void`	`printStackTrace(PrintWriter s)` Prints this throwable and its backtrace to the specified print writer.
`void`	`printStackTrace(PrintStream s)` Prints this throwable and its backtrace to the specified print stream.
`void`	`setStackTrace(StackTraceElement[] stackTrace)` Sets the stack trace elements that will be returned by `getStackTrace()` and printed by `printStackTrace()` and related methods.
`String`	`toString()` Returns a short description of this throwable.

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

IOException

Added in API level 1

IOException ()

Constructs an IOException with null as its error detail message.

IOException

Added in API level 1

IOException (String message)

Constructs an IOException with the specified detail message.

Parameters
`message`	`String`: The detail message (which is saved for later retrieval by the `getMessage()` method)

IOException

Added in API level 9

IOException (String message, 
                Throwable cause)

Constructs an IOException with the specified detail message and cause.

Note that the detail message associated with cause is not automatically incorporated into this exception's detail message.

Parameters
`message`	`String`: The detail message (which is saved for later retrieval by the `getMessage()` method)
`cause`	`Throwable`: The cause (which is saved for later retrieval by the `getCause()` method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)

IOException

Added in API level 9

IOException (Throwable cause)

Constructs an IOException with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause). This constructor is useful for IO exceptions that are little more than wrappers for other throwables.

Parameters
`cause`	`Throwable`: The cause (which is saved for later retrieval by the `getCause()` method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)

Interfaces

Classes

Exceptions

Errors

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Summary

Public constructors

Inherited methods

Public constructors

IOException

IOException

IOException

IOException