Error

extends Throwable

java.lang.Object
↳	java.lang.Throwable
	↳	java.lang.Error

Known Direct Subclasses

AWTError, AgentConfigurationError, AnnotationFormatError, AssertionError, CoderMalfunctionError, CompilerError, IOError, LinkageError, ServiceConfigurationError, ThreadDeath, TokenMgrError, VirtualMachineError

Known Indirect Subclasses

AbstractMethodError, ClassCircularityError, ClassFormatError, ExceptionInInitializerError, GenericSignatureFormatError, IllegalAccessError, IncompatibleClassChangeError, InstantiationError, InternalError, NoClassDefFoundError, NoSuchFieldError, NoSuchMethodError, OutOfMemoryError, StackOverflowError, UnknownError, UnsatisfiedLinkError, UnsupportedClassVersionError, VerifyError, ZipError

AbstractMethodError	Thrown when an application tries to call an abstract method.
ClassCircularityError	Thrown when a circularity has been detected while initializing a class.
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.
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.

Class Overview

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.

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`).

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Inherited Methods

From class java.lang.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() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, 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 timeout) 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.

Public Constructors

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 initCause(Throwable).

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 initCause(Throwable).

Parameters

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

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	the detail message (which is saved for later retrieval by the `getMessage()` method).
cause	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.)

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	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

Annotations

Enums

Exceptions

Errors

Error

Class Overview

See Also

Summary

Public Constructors

public Error ()

public Error (String message)

Parameters

public Error (String message, Throwable cause)

Parameters

public Error (Throwable cause)

Parameters