public String toString ()

Overriding: java.lang.Object

Returns a short description of this throwable. The result is the concatenation of:

• the name of the class of this object
• ": " (a colon and a space)
• the result of invoking this object's getLocalizedMessage method

If getLocalizedMessage returns null, then just the class name is returned.

Returns:  a string representation of this throwable.