Eclipse Platform
Release 3.7

org.eclipse.swt
Class SWTException

java.lang.Object
  extended by java.lang.Throwable
      extended by java.lang.Exception
          extended by java.lang.RuntimeException
              extended by org.eclipse.swt.SWTException
All Implemented Interfaces:
Serializable

public class SWTException
extends RuntimeException

This runtime exception is thrown whenever a recoverable 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 exception that caused the problem (if this information is available (i.e. it may be null)).

SWTExceptions are thrown when something fails internally, but SWT is left in a known stable state (eg. a widget call was made from a non-u/i thread, or there is failure while reading an Image because the source file was corrupt).

See Also:
SWTError, Sample code and further information, 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
SWTException()
          Constructs a new instance of this class with its stack trace filled in.
SWTException(int code)
          Constructs a new instance of this class with its stack trace and error code filled in.
SWTException(int code, String message)
          Constructs a new instance of this class with its stack trace, error code and message filled in.
SWTException(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 SWTException object.
 void printStackTrace()
          Outputs a printable representation of this exception'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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

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.

Constructor Detail

SWTException

public SWTException()
Constructs a new instance of this class with its stack trace filled in. The error code is set to an unspecified value.


SWTException

public SWTException(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

SWTException

public SWTException(int code)
Constructs a new instance of this class with its stack trace and error code filled in.

Parameters:
code - the SWT error code

SWTException

public SWTException(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
Method Detail

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.

Overrides:
getCause in class Throwable
Returns:
the underlying throwable
Since:
3.1

getMessage

public String getMessage()
Returns the string describing this SWTException object.

It is combined with the message string of the Throwable which caused this SWTException (if this information is available).

Overrides:
getMessage in class Throwable
Returns:
the error message string of this SWTException object

printStackTrace

public void printStackTrace()
Outputs a printable representation of this exception's stack trace on the standard error stream.

Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter) are not provided in order to maintain compatibility with CLDC.

Overrides:
printStackTrace in class Throwable

Eclipse Platform
Release 3.7

Guidelines for using Eclipse APIs.

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