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java.lang.Object java.lang.Throwable java.lang.Error org.eclipse.swt.SWTError
public class SWTError
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.
SWTException
,
SWT.error(int)
,
Serialized FormField Summary | |
---|---|
int |
code
The SWT error code, one of SWT.ERROR_*. |
java.lang.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,
java.lang.String message)
Constructs a new instance of this class with its stack trace, error code and message filled in. |
|
SWTError(java.lang.String message)
Constructs a new instance of this class with its stack trace and message filled in. |
Method Summary | |
---|---|
java.lang.Throwable |
getCause()
Returns the underlying throwable that caused the problem, or null if this information is not available. |
java.lang.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. |
Methods inherited from class java.lang.Throwable |
---|
fillInStackTrace, getLocalizedMessage, getStackTrace, initCause, printStackTrace, printStackTrace, setStackTrace, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public int code
public java.lang.Throwable throwable
Constructor Detail |
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public SWTError()
public SWTError(java.lang.String message)
null
as the message is equivalent to specifying an empty string.
message
- the detail message for the exceptionpublic SWTError(int code)
code
- the SWT error codepublic SWTError(int code, java.lang.String message)
null
as the message is
equivalent to specifying an empty string.
code
- the SWT error codemessage
- the detail message for the exceptionMethod Detail |
---|
public java.lang.Throwable getCause()
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.
getCause
in class java.lang.Throwable
public java.lang.String getMessage()
It is combined with the message string of the Throwable which caused this SWTError (if this information is available).
getMessage
in class java.lang.Throwable
public void printStackTrace()
Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter) are not provided in order to maintain compatibility with CLDC.
printStackTrace
in class java.lang.Throwable
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