phantom-reference Questions

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I've been reading this article about PhantomReference https://www.baeldung.com/java-phantom-reference and simplified sample code found there: public static void main(String[] args) throws Interrup...
Illuminator asked 17/12, 2018 at 19:53

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I have read this article about different types of references in Java (strong, soft, weak, phantom), but I don't really understand it. What is the difference between these reference types, and when ...

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As Hans Boehm in the Google I/O '17 talk "How to Manage Native C++ Memory in Android" suggests I use the PhantomReferenceclass to ensure native peers are deleted properly. In the linked video at 1...
Bangle asked 10/9, 2017 at 19:6

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Javadoc 8 for PhantomReference states: Phantom references are most often used for scheduling pre-mortem cleanup actions in a more flexible way than is possible with the Java finalization mechan...

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Phantom References serve for post-mortem operations. The Java specification states that a phantom referenced object will not be deallocated until the phantom-reference itself is cleaned. My questi...
Hart asked 17/9, 2008 at 7:6

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I try to understand class ReferenceQueue It is optional constructor argument for SoftReference and WeakReference Also it is mandatory argument for PhantomReference. According information I...
Shanta asked 29/12, 2016 at 11:36

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Java allow to write: new PhantomReference(new Object(), null) At this case new Object() will be collected? As I understand, phantom reference is alternative of finalize() method usage. And aft...

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Can someone explain the difference between the three Reference classes (or post a link to a nice explanation)? SoftReference > WeakReference > PhantomReference, but when would I use each one? Why i...
Izolaiztaccihuatl asked 25/7, 2010 at 15:8

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As per the link https://weblogs.java.net/blog/enicholas/archive/2006/05/understanding_w.html, PhantomReferences are enqueued only when the object is physically removed from memory and WeakReference...

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I'm trying to implement a mechanism that deletes cached files when the objects that hold them die, and decided to use PhantomReferences to get notified on garbage collection of an object. The probl...
Disinfest asked 5/8, 2013 at 19:2

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I read many articles, but I don't understand - where do I need to use Weak and Phantom references in practice? Soft references - is a good choice for cache, as I understand. But weak and phantom, I...
Reconvert asked 9/7, 2012 at 14:49

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I have read about the different types of reference. I understand how strong, soft and weak references work. But when I read about phantom references, I could not really understand them. Mayb...
Kosher asked 22/3, 2012 at 16:44
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