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Error
public
class
Error
extends Throwable
Known direct subclasses
AnnotationFormatError, AssertionError, AssertionFailedError, CoderMalfunctionError, FactoryConfigurationError, IOError, LinkageError, ServiceConfigurationError, ThreadDeath, TransformerFactoryConfigurationError, VirtualMachineError
|
Known indirect subclasses
AbstractMethodError, BootstrapMethodError, ClassCircularityError, ClassFormatError, ComparisonFailure, ExceptionInInitializerError, GenericSignatureFormatError, IllegalAccessError, IncompatibleClassChangeError, InstantiationError, InternalError, NoClassDefFoundError, NoSuchFieldError, NoSuchMethodError, OutOfMemoryError, and 6 others.
AbstractMethodError |
Thrown when an application tries to call an abstract method.
|
BootstrapMethodError |
Thrown to indicate that an invokedynamic instruction or a dynamic
constant failed to resolve its bootstrap method and arguments,
or for invokedynamic instruction the bootstrap method has failed to
provide a
call site with a
target
of the correct method type,
or for a dynamic constant the bootstrap method has failed to provide a
constant value of the required type.
|
ClassCircularityError |
Thrown when the Java Virtual Machine detects a circularity in the
superclass hierarchy of a class being loaded.
|
ClassFormatError |
Thrown when the Java Virtual Machine attempts to read a class
file and determines that the file is malformed or otherwise cannot
be interpreted as a class file.
|
ComparisonFailure |
This class was deprecated
in API level 16.
use org.junit.ComparisonFailure
|
ExceptionInInitializerError |
Signals that an unexpected exception has occurred in a static initializer.
|
GenericSignatureFormatError |
Thrown when a syntactically malformed signature attribute is
encountered by a reflective method that needs to interpret the
generic signature information for a type, method or constructor.
|
IllegalAccessError |
Thrown if an application attempts to access or modify a field, or
to call a method that it does not have access to.
|
IncompatibleClassChangeError |
Thrown when an incompatible class change has occurred to some class
definition.
|
InstantiationError |
Thrown when an application tries to use the Java new
construct to instantiate an abstract class or an interface.
|
InternalError |
Thrown to indicate some unexpected internal error has occurred in
the Java Virtual Machine.
|
NoClassDefFoundError |
Thrown if the Java Virtual Machine or a ClassLoader instance
tries to load in the definition of a class (as part of a normal method call
or as part of creating a new instance using the new expression)
and no definition of the class could be found.
|
NoSuchFieldError |
Thrown if an application tries to access or modify a specified
field of an object, and that object no longer has that field.
|
NoSuchMethodError |
Thrown if an application tries to call a specified method of a
class (either static or instance), and that class no longer has a
definition of that method.
|
OutOfMemoryError |
Thrown when the Java Virtual Machine cannot allocate an object
because it is out of memory, and no more memory could be made
available by the garbage collector.
|
StackOverflowError |
Thrown when a stack overflow occurs because an application
recurses too deeply.
|
UnknownError |
Thrown when an unknown but serious exception has occurred in the
Java Virtual Machine.
|
UnsatisfiedLinkError |
Thrown if the Java Virtual Machine cannot find an appropriate
native-language definition of a method declared native .
|
UnsupportedClassVersionError |
Thrown when the Java Virtual Machine attempts to read a class
file and determines that the major and minor version numbers
in the file are not supported.
|
VerifyError |
Thrown when the "verifier" detects that a class file,
though well formed, contains some sort of internal inconsistency
or security problem.
|
ZipError |
Signals that an unrecoverable error has occurred.
|
|
An Error
is a subclass of Throwable
that indicates serious problems that a reasonable application
should not try to catch. Most such errors are abnormal conditions.
The ThreadDeath
error, though a "normal" condition,
is also a subclass of Error
because most applications
should not try to catch it.
A method is not required to declare in its throws
clause any subclasses of Error
that might be thrown
during the execution of the method but not caught, since these
errors are abnormal conditions that should never occur.
That is, Error
and its subclasses are regarded as unchecked
exceptions for the purposes of compile-time checking of exceptions.
Summary
Public constructors |
Error()
Constructs a new error with null as its detail message.
|
Error(String message)
Constructs a new error with the specified detail message.
|
Error(String message, Throwable cause)
Constructs a new error with the specified detail message and
cause.
|
Error(Throwable cause)
Constructs a new error 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 constructors |
Error(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace)
Constructs a new error with the specified detail message,
cause, suppression enabled or disabled, and writable stack
trace enabled or disabled.
|
Inherited methods |
|
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 timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
Public constructors
Error
public Error ()
Constructs a new error with null
as its detail message.
The cause is not initialized, and may subsequently be initialized by a
call to Throwable.initCause(Throwable)
.
Error
public Error (String message)
Constructs a new error with the specified detail message. The
cause is not initialized, and may subsequently be initialized by
a call to Throwable.initCause(Throwable)
.
Parameters |
message |
String : the detail message. The detail message is saved for
later retrieval by the Throwable.getMessage() method. |
Error
public Error (String message,
Throwable cause)
Constructs a new error with the specified detail message and
cause.
Note that the detail message associated with
cause
is not automatically incorporated in
this error's detail message.
Parameters |
message |
String : the detail message (which is saved for later retrieval
by the Throwable.getMessage() method). |
cause |
Throwable : 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.) |
Error
public Error (Throwable cause)
Constructs a new error 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 errors that are little more than
wrappers for other throwables.
Parameters |
cause |
Throwable : 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
Error
protected Error (String message,
Throwable cause,
boolean enableSuppression,
boolean writableStackTrace)
Constructs a new error with the specified detail message,
cause, suppression enabled or disabled, and writable stack
trace enabled or disabled.
Parameters |
message |
String : the detail message. |
cause |
Throwable : the cause. (A null value is permitted,
and indicates that the cause is nonexistent or unknown.) |
enableSuppression |
boolean : whether or not suppression is enabled
or disabled |
writableStackTrace |
boolean : whether or not the stack trace should
be writable |
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Last updated 2025-01-23 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-01-23 UTC."],[],[]]