What is the Java equivalent for C# Interlocked.Exchange(Object, Object) : Object? Is there a way in Java to perform the following actions in a single atomic step without lock: 1) store locally the reference of a variable 2) set another reference to the same variable?
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jeromerg
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You assume `Interlocked` doesn't use a lock. Any source for that? – Patrick Hofman Sep 23 '16 at 06:59
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1It doesn't. I will let @jon-skeet answer your question ;-) [Here](http://www.albahari.com/threading/part4.aspx#_Interlocked) you find an detailed explanation. – jeromerg Sep 23 '16 at 07:20
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Okay. I read from your question you thought it did. – Patrick Hofman Sep 23 '16 at 07:23
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There's no operation to do this for an arbitrary variable, as far as I'm aware... but this is what the AtomicReference type is for:
private AtomicReference<String> stringReference;
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String oldValue = stringReference.getAndSet(newValue);
Jon Skeet
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