It won't change ever it's content

# announcements

[alexsimo]

It won't change ever it's content

[kralli]

An exception always has a stacktrace, which is dependent on where you throw it.

[kralli]

You can disable the fill-in of the stacktrace using the appropriate constructor, though. There are rare cases in which such a exception can make sense, but not in a normal application.

[Dico]

If exception is used as integral part of control flow, it makes sense to throw the same instance each time from a performance perspective

[kralli]

Though exceptions should not be used as control flow.