org.eclipse.swt
Class SWTError
java.lang.Object
java.lang.Throwable
java.lang.Error
org.eclipse.swt.SWTError
-
All Implemented Interfaces:
-
Serializable
- public class SWTError
- extends
Error
This error is thrown whenever an unrecoverable error
occurs internally in SWT. The message text and error code
provide a further description of the problem. The exception
has a throwable
field which holds the underlying
throwable that caused the problem (if this information is
available (i.e. it may be null)).
SWTErrors are thrown when something fails internally which
either leaves SWT in an unknown state (eg. the o/s call to
remove an item from a list returns an error code) or when SWT
is left in a known-to-be-unrecoverable state (eg. it runs out
of callback resources). SWTErrors should not occur in typical
programs, although "high reliability" applications should
still catch them.
This class also provides support methods used by SWT to match
error codes to the appropriate exception class (SWTError,
SWTException, or IllegalArgumentException) and to provide
human readable strings for SWT error codes.
-
Since:
- 1.0
-
See Also:
-
SWTException
,
SWT.error(int)
,
Serialized Form
Field Summary
|
int
|
code
The SWT error code, one of SWT.ERROR_*. |
Throwable
|
throwable
The underlying throwable that caused the problem,
or null if this information is not available. |
Constructor Summary
|
SWTError
()
Constructs a new instance of this class with its
stack trace filled in. |
SWTError
(int code)
Constructs a new instance of this class with its
stack trace and error code filled in. |
SWTError
(int code,
String message)
Constructs a new instance of this class with its
stack trace, error code and message filled in. |
SWTError
(
String message)
Constructs a new instance of this class with its
stack trace and message filled in. |
Method Summary
|
Throwable
|
getCause
()
Returns the underlying throwable that caused the problem,
or null if this information is not available. |
String
|
getMessage
()
Returns the string describing this SWTError object. |
void
|
printStackTrace
()
Outputs a printable representation of this error's
stack trace on the standard error stream. |
code
public int code
- The SWT error code, one of SWT.ERROR_*.
throwable
public
Throwable throwable
- The underlying throwable that caused the problem,
or null if this information is not available.
SWTError
public SWTError()
- Constructs a new instance of this class with its
stack trace filled in. The error code is set to an
unspecified value.
SWTError
public SWTError(
String message)
- Constructs a new instance of this class with its
stack trace and message filled in. The error code is
set to an unspecified value. Specifying
null
as the message is equivalent to specifying an empty string.
-
Parameters:
-
message
- the detail message for the exception
SWTError
public SWTError(int code)
- Constructs a new instance of this class with its
stack trace and error code filled in.
-
Parameters:
-
code
- the SWT error code
SWTError
public SWTError(int code,
String message)
- Constructs a new instance of this class with its
stack trace, error code and message filled in.
Specifying
null
as the message is
equivalent to specifying an empty string.
-
Parameters:
-
code
- the SWT error code -
message
- the detail message for the exception
getCause
public
Throwable getCause()
- Returns the underlying throwable that caused the problem,
or null if this information is not available.
NOTE: This method overrides Throwable.getCause() that was
added to JDK1.4. It is necessary to override this method
in order for inherited printStackTrace() methods to work.
-
-
Returns:
- the underlying throwable
-
Since:
- 1.0
getMessage
public
String getMessage()
- Returns the string describing this SWTError object.
It is combined with the message string of the Throwable
which caused this SWTError (if this information is available).
-
-
Returns:
- the error message string of this SWTError object
printStackTrace
public void printStackTrace()
- Outputs a printable representation of this error's
stack trace on the standard error stream.
Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter)
are not provided in order to maintain compatibility with CLDC.
-
Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.