public class Error extends Throwable
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.
ThreadDeath
,
Serialized Form
Modifier | Constructor and Description |
---|---|
|
Error()
Constructs a new error with
null as its detail message.
|
|
Error(String
Constructs a new error with the specified detail message.
|
|
Error(String
Constructs a new error with the specified detail message and cause.
|
protected |
Error(String
Constructs a new error with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled.
|
|
Error(Throwable
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 ).
|
addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
public Error()
null
as its detail message. The cause is not initialized, and may subsequently be initialized by a call to
Throwable.initCause(java.lang.Throwable)
.
public Error(Stringmessage)
Throwable.initCause(java.lang.Throwable)
.
message
- the detail message. The detail message is saved for later retrieval by the
Throwable.getMessage()
method.
public Error(Stringmessage, Throwable cause)
Note that the detail message associated with cause
is not automatically incorporated in this error's detail message.
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 Error(Throwablecause)
(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.
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 Error(Stringmessage, Throwable cause, boolean enableSuppression, boolean writableStackTrace)
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