Exception

public class Exception extends Throwable

Known Direct Subclasses BrokenBarrierException, CertificateException, CloneNotSupportedException, DataFormatException, DatatypeConfigurationException, DestroyFailedException, ExecutionException, GeneralSecurityException, IOException, InterruptedException, IntrospectionException, ParseException, ParserConfigurationException, PrivilegedActionException, PropertyVetoException, and 10 others. BrokenBarrierException Exception thrown when a thread tries to wait upon a barrier that is in a broken state, or which enters the broken state while the thread is waiting.  CertificateException This exception indicates one of a variety of certificate problems.  CloneNotSupportedException Thrown to indicate that the clone method in class Object has been called to clone an object, but that the object's class does not implement the Cloneable interface.  DataFormatException Signals that a data format error has occurred.  DatatypeConfigurationException Indicates a serious configuration error.  DestroyFailedException Signals that a destroy operation failed.  ExecutionException Exception thrown when attempting to retrieve the result of a task that aborted by throwing an exception.  GeneralSecurityException The GeneralSecurityException class is a generic security exception class that provides type safety for all the security-related exception classes that extend from it.  IOException Signals that an I/O exception of some sort has occurred.  InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied, and the thread is interrupted, either before or during the activity.  IntrospectionException   ParseException Signals that an error has been reached unexpectedly while parsing.  ParserConfigurationException Indicates a serious configuration error.  PrivilegedActionException Legacy security code; do not use.  PropertyVetoException Indicates that a proposed property change is unacceptable.  ReflectiveOperationException Common superclass of exceptions thrown by reflective operations in core reflection.  RuntimeException RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.  SAXException Encapsulate a general SAX error or warning.  SQLException An exception that provides information on a database access error or other errors.  TimeoutException Exception thrown when a blocking operation times out.  TooManyListenersException The TooManyListenersException Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source.  TransformerException This class specifies an exceptional condition that occurred during the transformation process.  URISyntaxException Checked exception thrown to indicate that a string could not be parsed as a URI reference.  UnsupportedCallbackException Signals that a CallbackHandler does not recognize a particular Callback.  XPathException XPathException represents a generic XPath exception.

Known Indirect Subclasses AEADBadTagException, AcceptPendingException, AccessControlException, AccessDeniedException, AlreadyBoundException, AlreadyConnectedException, AnnotationTypeMismatchException, ArithmeticException, ArrayIndexOutOfBoundsException, ArrayStoreException, AsynchronousCloseException, AtomicMoveNotSupportedException, BadPaddingException, BatchUpdateException, BindException, and 185 others. AEADBadTagException This exception is thrown when a Cipher operating in an AEAD mode (such as GCM/CCM) is unable to verify the supplied authentication tag.  AcceptPendingException Unchecked exception thrown when an attempt is made to initiate an accept operation on a channel and a previous accept operation has not completed.  AccessControlException This exception is thrown by the AccessController to indicate that a requested access (to a critical system resource such as the file system or the network) is denied.  AccessDeniedException Checked exception thrown when a file system operation is denied, typically due to a file permission or other access check.  AlreadyBoundException Unchecked exception thrown when an attempt is made to bind the socket a network oriented channel that is already bound.  AlreadyConnectedException Unchecked exception thrown when an attempt is made to connect a SocketChannel that is already connected.  AnnotationTypeMismatchException Thrown to indicate that a program has attempted to access an element of an annotation whose type has changed after the annotation was compiled (or serialized).  ArithmeticException Thrown when an exceptional arithmetic condition has occurred.  ArrayIndexOutOfBoundsException Thrown to indicate that an array has been accessed with an illegal index.  ArrayStoreException Thrown to indicate that an attempt has been made to store the wrong type of object into an array of objects.  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.  AtomicMoveNotSupportedException Checked exception thrown when a file cannot be moved as an atomic file system operation.  BadPaddingException This exception is thrown when a particular padding mechanism is expected for the input data but the data is not padded properly.  BatchUpdateException The subclass of SQLException thrown when an error occurs during a batch update operation.  BindException Signals that an error occurred while attempting to bind a socket to a local address and port.  BufferOverflowException Unchecked exception thrown when a relative put operation reaches the target buffer's limit.  BufferUnderflowException Unchecked exception thrown when a relative get operation reaches the source buffer's limit.  CRLException CRL (Certificate Revocation List) Exception.  CancellationException Exception indicating that the result of a value-producing task, such as a FutureTask, cannot be retrieved because the task was cancelled.  CancelledKeyException Unchecked exception thrown when an attempt is made to use a selection key that is no longer valid.  CertPathBuilderException An exception indicating one of a variety of problems encountered when building a certification path with a CertPathBuilder.  CertPathValidatorException An exception indicating one of a variety of problems encountered when validating a certification path.  CertStoreException An exception indicating one of a variety of problems retrieving certificates and CRLs from a CertStore.  CertificateEncodingException Certificate Encoding Exception.  CertificateException This exception indicates one of a variety of certificate problems.  CertificateExpiredException Certificate Expired Exception.  CertificateNotYetValidException Certificate is not yet valid exception.  CertificateParsingException Certificate Parsing Exception.  CertificateRevokedException An exception that indicates an X.509 certificate is revoked.  CharConversionException Base class for character conversion exceptions.  CharacterCodingException Checked exception thrown when a character encoding or decoding error occurs.  ClassCastException Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.  ClassNotFoundException Thrown when an application tries to load in a class through its string name using: The forName method in class Class.  ClosedByInterruptException Checked exception received by a thread when another thread interrupts it while it is blocked in an I/O operation upon a channel.  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.  ClosedDirectoryStreamException Unchecked exception thrown when an attempt is made to invoke an operation on a directory stream that is closed.  ClosedFileSystemException Unchecked exception thrown when an attempt is made to invoke an operation on a file and the file system is closed.  ClosedSelectorException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a closed selector.  ClosedWatchServiceException Unchecked exception thrown when an attempt is made to invoke an operation on a watch service that is closed.  CompletionException Exception thrown when an error or other exception is encountered in the course of completing a result or task.  ConcurrentModificationException This exception may be thrown by methods that have detected concurrent modification of an object when such modification is not permissible.  ConnectException Signals that an error occurred while attempting to connect a socket to a remote address and port.  ConnectionPendingException Unchecked exception thrown when an attempt is made to connect a SocketChannel for which a non-blocking connection operation is already in progress.  DOMException DOM operations only raise exceptions in "exceptional" circumstances, i.e., when an operation is impossible to perform (either for logical reasons, because data is lost, or because the implementation has become unstable).  DataTruncation An exception thrown as a DataTruncation exception (on writes) or reported as a DataTruncation warning (on reads) when a data values is unexpectedly truncated for reasons other than its having execeeded MaxFieldSize.  DateTimeException Exception used to indicate a problem while calculating a date-time.  DateTimeParseException An exception thrown when an error occurs during parsing.  DigestException This is the generic Message Digest exception.  DirectoryIteratorException Runtime exception thrown if an I/O error is encountered when iterating over the entries in a directory.  DirectoryNotEmptyException Checked exception thrown when a file system operation fails because a directory is not empty.  DuplicateFormatFlagsException Unchecked exception thrown when duplicate flags are provided in the format specifier.  EOFException Signals that an end of file or end of stream has been reached unexpectedly during input.  EmptyStackException Thrown by methods in the Stack class to indicate that the stack is empty.  EnumConstantNotPresentException Thrown when an application tries to access an enum constant by name and the enum type contains no constant with the specified name.  ExemptionMechanismException This is the generic ExemptionMechanism exception.  FileAlreadyExistsException Checked exception thrown when an attempt is made to create a file or directory and a file of that name already exists.  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.  FileSystemAlreadyExistsException Runtime exception thrown when an attempt is made to create a file system that already exists.  FileSystemException Thrown when a file system operation fails on one or two files.  FileSystemLoopException Checked exception thrown when a file system loop, or cycle, is encountered.  FileSystemNotFoundException Runtime exception thrown when a file system cannot be found.  FormatFlagsConversionMismatchException Unchecked exception thrown when a conversion and flag are incompatible.  FormatterClosedException Unchecked exception thrown when the formatter has been closed.  HttpRetryException Thrown to indicate that a HTTP request needs to be retried but cannot be retried automatically, due to streaming mode being enabled.  IllegalAccessException An IllegalAccessException is thrown when an application tries to reflectively create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor.  IllegalArgumentException Thrown to indicate that a method has been passed an illegal or inappropriate argument.  IllegalBlockSizeException This exception is thrown when the length of data provided to a block cipher is incorrect, i.e., does not match the block size of the cipher.  IllegalBlockingModeException Unchecked exception thrown when a blocking-mode-specific operation is invoked upon a channel in the incorrect blocking mode.  IllegalChannelGroupException Unchecked exception thrown when an attempt is made to open a channel in a group that was not created by the same provider.  IllegalCharsetNameException Unchecked exception thrown when a string that is not a legal charset name is used as such.  IllegalFormatCodePointException Unchecked exception thrown when a character with an invalid Unicode code point as defined by Character.isValidCodePoint(int) is passed to the Formatter.  IllegalFormatConversionException Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type.  IllegalFormatException Unchecked exception thrown when a format string contains an illegal syntax or a format specifier that is incompatible with the given arguments.  IllegalFormatFlagsException Unchecked exception thrown when an illegal combination flags is given.  IllegalFormatPrecisionException Unchecked exception thrown when the precision is a negative value other than -1, the conversion does not support a precision, or the value is otherwise unsupported.  IllegalFormatWidthException Unchecked exception thrown when the format width is a negative value other than -1 or is otherwise unsupported.  IllegalMonitorStateException Thrown to indicate that a thread has attempted to wait on an object's monitor or to notify other threads waiting on an object's monitor without owning the specified monitor.  IllegalSelectorException Unchecked exception thrown when an attempt is made to register a channel with a selector that was not created by the provider that created the channel.  IllegalStateException Signals that a method has been invoked at an illegal or inappropriate time.  IllegalThreadStateException Thrown to indicate that a thread is not in an appropriate state for the requested operation.  IllformedLocaleException Thrown by methods in Locale and Locale.Builder to indicate that an argument is not a well-formed BCP 47 tag.  IncompleteAnnotationException Thrown to indicate that a program has attempted to access an element of an annotation type that was added to the annotation type definition after the annotation was compiled (or serialized).  IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a string, or to a vector) is out of range.  InputMismatchException Thrown by a Scanner to indicate that the token retrieved does not match the pattern for the expected type, or that the token is out of range for the expected type.  InstantiationException Thrown when an application tries to create an instance of a class using the newInstance method in class Class, but the specified class object cannot be instantiated.  InterruptedByTimeoutException Checked exception received by a thread when a timeout elapses before an asynchronous operation completes.  InterruptedIOException Signals that an I/O operation has been interrupted.  InvalidAlgorithmParameterException This is the exception for invalid or inappropriate algorithm parameters.  InvalidClassException Thrown when the Serialization runtime detects one of the following problems with a Class.  InvalidKeyException This is the exception for invalid Keys (invalid encoding, wrong length, uninitialized, etc).  InvalidKeySpecException This is the exception for invalid key specifications.  InvalidMarkException Unchecked exception thrown when an attempt is made to reset a buffer when its mark is not defined.  InvalidObjectException Indicates that one or more deserialized objects failed validation tests.  InvalidParameterException This exception, designed for use by the JCA/JCE engine classes, is thrown when an invalid parameter is passed to a method.  InvalidParameterSpecException This is the exception for invalid parameter specifications.  InvalidPathException Unchecked exception thrown when path string cannot be converted into a Path because the path string contains invalid characters, or the path string is invalid for other file system specific reasons.  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.  InvocationTargetException InvocationTargetException is a checked exception that wraps an exception thrown by an invoked method or constructor.  JarException Signals that an error of some sort has occurred while reading from or writing to a JAR file.  KeyException This is the basic key exception.  KeyManagementException This is the general key management exception for all operations dealing with key management.  KeyStoreException This is the generic KeyStore exception.  LSException Parser or write operations may throw an LSException if the processing is stopped.  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.  MalformedParameterizedTypeException Thrown when a semantically malformed parameterized type is encountered by a reflective method that needs to instantiate it.  MalformedURLException Thrown to indicate that a malformed URL has occurred.  MissingFormatArgumentException Unchecked exception thrown when there is a format specifier which does not have a corresponding argument or if an argument index refers to an argument that does not exist.  MissingFormatWidthException Unchecked exception thrown when the format width is required.  MissingResourceException Signals that a resource is missing.  NegativeArraySizeException Thrown if an application tries to create an array with negative size.  NoConnectionPendingException Unchecked exception thrown when the finishConnect method of a SocketChannel is invoked without first successfully invoking its connect method.  NoRouteToHostException Signals that an error occurred while attempting to connect a socket to a remote address and port.  NoSuchAlgorithmException This exception is thrown when a particular cryptographic algorithm is requested but is not available in the environment.  NoSuchElementException Thrown by various accessor methods to indicate that the element being requested does not exist.  NoSuchFieldException Signals that the class doesn't have a field of a specified name.  NoSuchFileException Checked exception thrown when an attempt is made to access a file that does not exist.  NoSuchMethodException Thrown when a particular method cannot be found.  NoSuchPaddingException This exception is thrown when a particular padding mechanism is requested but is not available in the environment.  NoSuchProviderException This exception is thrown when a particular security provider is requested but is not available in the environment.  NonReadableChannelException Unchecked exception thrown when an attempt is made to read from a channel that was not originally opened for reading.  NonWritableChannelException Unchecked exception thrown when an attempt is made to write to a channel that was not originally opened for writing.  NotActiveException Thrown when serialization or deserialization is not active.  NotDirectoryException Checked exception thrown when a file system operation, intended for a directory, fails because the file is not a directory.  NotLinkException Checked exception thrown when a file system operation fails because a file is not a symbolic link.  NotSerializableException Thrown when an instance is required to have a Serializable interface.  NotYetBoundException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a server socket channel that is not yet bound.  NotYetConnectedException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a socket channel that is not yet connected.  NullPointerException Thrown when an application attempts to use null in a case where an object is required.  NumberFormatException Thrown to indicate that the application has attempted to convert a string to one of the numeric types, but that the string does not have the appropriate format.  ObjectStreamException Superclass of all exceptions specific to Object Stream classes.  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.  OverlappingFileLockException Unchecked exception thrown when an attempt is made to acquire a lock on a region of a file that overlaps a region already locked by the same Java virtual machine, or when another thread is already waiting to lock an overlapping region of the same file.  PatternSyntaxException Unchecked exception thrown to indicate a syntax error in a regular-expression pattern.  PortUnreachableException Signals that an ICMP Port Unreachable message has been received on a connected datagram.  ProtocolException Thrown to indicate that there is an error in the underlying protocol, such as a TCP error.  ProviderException A runtime exception for Provider exceptions (such as misconfiguration errors or unrecoverable internal errors), which may be subclassed by Providers to throw specialized, provider-specific runtime errors.  ProviderMismatchException Unchecked exception thrown when an attempt is made to invoke a method on an object created by one file system provider with a parameter created by a different file system provider.  ProviderNotFoundException Runtime exception thrown when a provider of the required type cannot be found.  ReadOnlyBufferException Unchecked exception thrown when a content-mutation method such as put or compact is invoked upon a read-only buffer.  ReadOnlyFileSystemException Unchecked exception thrown when an attempt is made to update an object associated with a read-only FileSystem.  ReadPendingException Unchecked exception thrown when an attempt is made to read from an asynchronous socket channel and a previous read has not completed.  RejectedExecutionException Exception thrown by an Executor when a task cannot be accepted for execution.  SAXNotRecognizedException Exception class for an unrecognized identifier.  SAXNotSupportedException Exception class for an unsupported operation.  SAXParseException Encapsulate an XML parse error or warning.  SQLClientInfoException The subclass of SQLException is thrown when one or more client info properties could not be set on a Connection.  SQLDataException The subclass of SQLException thrown when the SQLState class value is '22', or under vendor-specified conditions.  SQLFeatureNotSupportedException The subclass of SQLException thrown when the SQLState class value is '0A' ( the value is 'zero' A).  SQLIntegrityConstraintViolationException The subclass of SQLException thrown when the SQLState class value is '23', or under vendor-specified conditions.  SQLInvalidAuthorizationSpecException The subclass of SQLException thrown when the SQLState class value is '28', or under vendor-specified conditions.  SQLNonTransientConnectionException The subclass of SQLException thrown for the SQLState class value '08', or under vendor-specified conditions.  SQLNonTransientException The subclass of SQLException thrown when an instance where a retry of the same operation would fail unless the cause of the SQLException is corrected.  SQLRecoverableException The subclass of SQLException thrown in situations where a previously failed operation might be able to succeed if the application performs some recovery steps and retries the entire transaction or in the case of a distributed transaction, the transaction branch.  SQLSyntaxErrorException The subclass of SQLException thrown when the SQLState class value is '42', or under vendor-specified conditions.  SQLTimeoutException The subclass of SQLException thrown when the timeout specified by Statement has expired.  SQLTransactionRollbackException The subclass of SQLException thrown when the SQLState class value is '40', or under vendor-specified conditions.  SQLTransientConnectionException The subclass of SQLException for the SQLState class value '08', or under vendor-specified conditions.  SQLTransientException The subclass of SQLException is thrown in situations where a previoulsy failed operation might be able to succeed when the operation is retried without any intervention by application-level functionality.  SQLWarning An exception that provides information on database access warnings.  SSLException Indicates some kind of error detected by an SSL subsystem.  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.  SecurityException Thrown by the security manager to indicate a security violation.  ShortBufferException This exception is thrown when an output buffer provided by the user is too short to hold the operation result.  ShutdownChannelGroupException Unchecked exception thrown when an attempt is made to construct a channel in a group that is shutdown or the completion handler for an I/O operation cannot be invoked because the channel group has terminated.  SignatureException This is the generic Signature exception.  SocketException Thrown to indicate that there is an error creating or accessing a Socket.  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.  StringIndexOutOfBoundsException Thrown by String methods to indicate that an index is either negative or greater than the size of the string.  SyncFailedException Signals that a sync operation has failed.  TransformerConfigurationException Indicates a serious configuration error.  TypeNotPresentException Thrown when an application tries to access a type using a string representing the type's name, but no definition for the type with the specified name can be found.  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.  UncheckedIOException Wraps an IOException with an unchecked exception.  UndeclaredThrowableException Thrown by a method invocation on a proxy instance if its invocation handler's invoke method throws a checked exception (a Throwable that is not assignable to RuntimeException or Error) that is not assignable to any of the exception types declared in the throws clause of the method that was invoked on the proxy instance and dispatched to the invocation handler.  UnknownFormatConversionException Unchecked exception thrown when an unknown conversion is given.  UnknownFormatFlagsException Unchecked exception thrown when an unknown flag is given.  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.  UnmappableCharacterException Checked exception thrown when an input character (or byte) sequence is valid but cannot be mapped to an output byte (or character) sequence.  UnrecoverableEntryException This exception is thrown if an entry in the keystore cannot be recovered.  UnrecoverableKeyException This exception is thrown if a key in the keystore cannot be recovered.  UnresolvedAddressException Unchecked exception thrown when an attempt is made to invoke a network operation upon an unresolved socket address.  UnsupportedAddressTypeException Unchecked exception thrown when an attempt is made to bind or connect to a socket address of a type that is not supported.  UnsupportedCharsetException Unchecked exception thrown when no support is available for a requested charset.  UnsupportedEncodingException The Character Encoding is not supported.  UnsupportedOperationException Thrown to indicate that the requested operation is not supported.  UnsupportedTemporalTypeException UnsupportedTemporalTypeException indicates that a ChronoField or ChronoUnit is not supported for a Temporal class.  UserPrincipalNotFoundException Checked exception thrown when a lookup of UserPrincipal fails because the principal does not exist.  WriteAbortedException Signals that one of the ObjectStreamExceptions was thrown during a write operation.  WritePendingException Unchecked exception thrown when an attempt is made to write to an asynchronous socket channel and a previous write has not completed.  XPathExpressionException XPathExpressionException represents an error in an XPath expression.  XPathFactoryConfigurationException XPathFactoryConfigurationException represents a configuration error in a XPathFactory environment.  XPathFunctionException XPathFunctionException represents an error with an XPath function.  ZipException Signals that a Zip exception of some sort has occurred.  ZoneRulesException Thrown to indicate a problem with time-zone configuration.

The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

The class Exception and any subclasses that are not also subclasses of RuntimeException are checked exceptions. Checked exceptions need to be declared in a method or constructor's throws clause if they can be thrown by the execution of the method or constructor and propagate outside the method or constructor boundary.

See Also

• Error

Public Constructor Summary

	Exception() Constructs a new exception with null as its detail message.
	Exception(String message) Constructs a new exception with the specified detail message.
	Exception(String message, Throwable cause) Constructs a new exception with the specified detail message and cause.
	Exception(Throwable cause) 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).

Protected Constructor Summary

Exception(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) Constructs a new exception with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled.

Inherited Method Summary

From class java.lang.Throwable

synchronized final void	addSuppressed(Throwable exception) Appends the specified exception to the exceptions that were suppressed in order to deliver this exception.
synchronized Throwable	fillInStackTrace() Fills in the execution stack trace.
synchronized 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().
synchronized 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.
synchronized 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) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

Public Constructors

public Exception ()

Constructs a new exception with null as its detail message. The cause is not initialized, and may subsequently be initialized by a call to Throwable.initCause(Throwable).

public Exception (String message)

Constructs a new exception with the specified detail message. The cause is not initialized, and may subsequently be initialized by a call to Throwable.initCause(Throwable).

Parameters

message	the detail message. The detail message is saved for later retrieval by the Throwable.getMessage() method.

public Exception (String message, Throwable cause)

Constructs a new exception with the specified detail message and cause.

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

Parameters

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

public Exception (Throwable cause)

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). This constructor is useful for exceptions that are little more than wrappers for other throwables (for example, PrivilegedActionException).

Parameters

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

Protected Constructors

protected Exception (String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace)

Constructs a new exception with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled.

Parameters

message	the detail message.
cause	the cause. (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
enableSuppression	whether or not suppression is enabled or disabled
writableStackTrace	whether or not the stack trace should be writable