Package 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.

See Also:

  • Field Details

    • 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 Details

    • 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

  • Method Details

    • 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 SWTError object.

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

      Overrides:
      getMessage in class Throwable
      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.

      Overrides:
      printStackTrace in class Throwable