Known Direct Subclasses |
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.
See Also
Public Constructor Summary
Error()
Constructs a new error with
null as its detail message. |
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Protected Constructor Summary
Inherited Method Summary
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 Throwable.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 Throwable.initCause(Throwable)
.
Parameters
message | the detail message. The detail message is saved for
later retrieval by the Throwable.getMessage() method.
|
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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 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 (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
Throwable.getCause() method). (A null value is
permitted, and indicates that the cause is nonexistent or
unknown.) |
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Protected Constructors
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 | 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 |