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That's totally fair and what I expected. Maybe the if(x. isBound()) return x. get() could be made more performant, and I suppose somewhere the docs could mention using a NullObject pattern is a useful approach. -Michael Sent from Mailspring, the</div>
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<div>That's totally fair and what I expected. </div><br><div>Maybe the if(x.isBound()) return x.get() could be made more performant, and I suppose somewhere the docs could mention using a NullObject pattern is a useful approach.</div><br><div>-Michael</div><br><div><signature id="initial"><div><div>Sent from <a href="https://link.getmailspring.com/link/B0C6DE23-FA2B-4B0A-A181-FFBD8DD5AAED@getmailspring.com/0?redirect=https%3A%2F%2Fgetmailspring.com%2F&recipient=bG9vbS1kZXZAb3Blbmpkay5vcmc%3D">Mailspring</a>, the best free email app for work</div></div></signature></div><div class="gmail_quote_attribution">On Feb 23 2026, at 9:49 am, Alan Bateman <alan.bateman@oracle.com> wrote:</div><blockquote spellcheck="false"><div><br><br><div>On 23/02/2026 14:18, Michael Stover wrote:</div><div>> I've been using Scoped Values heavily for some time for a variety of</div><div>> things and just thought I'd share a couple thoughts . I'm currently</div><div>> using JDK 25.</div><div>></div><div>> First, really simply, the ScopedValue.get() method throws a runtime</div><div>> exception if the value is not bound. Ok, kind of like Optional. But,</div><div>> it seems ScopedValue.orElse(null) also throws a runtime exception,</div><div>> which makes it awkward to safely get the currently scoped value or</div><div>> null. Instead we have to do:</div><div>></div><div>> if(scopedValue.isBound()) return scopedValue.get();</div><div>> else return null;</div><div>></div><div>> Or use a static NullObject pattern. If we give orElse() a new Object,</div><div>> we're creating that new object every time regardless of whether it's</div><div>> needed. So, calling isBound() all the time seems overly verbose and</div><div>> tedious, and it appears to be a bit of a performance hit from my</div><div>> testing as well, as it's an expensive operation, and I guess we're now</div><div>> doing it twice.</div><div>></div><div>> So I think that could be improved so one can get a null out, or at</div><div>> least give us an idiom that isn't a performance drag.</div><div>></div><br><div>Using a sentinel value, like your NullObject, should be okay.</div><br><div>orElse(T) is specified to reject null to allow it be compatibly changed</div><div>to T! in the future.</div><br><div>-Alan</div></div></blockquote><img class="mailspring-open" alt="Sent from Mailspring" width="0" height="0" style="border:0; width:0; height:0;" src="https://link.getmailspring.com/open/B0C6DE23-FA2B-4B0A-A181-FFBD8DD5AAED@getmailspring.com?me=9c1fe37a&recipient=bG9vbS1kZXZAb3Blbmpkay5vcmc%3D">