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Weak References in Java: Working around the Garbage Collector

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Weak References are a slightly obscure, but extremely useful, feature of Java. They effectively give you a reference to an object that is ignored by the garbage collector! What does this mean? This means that if an object only has weak references pointing at it, it is eligible for GC. Weak references come in three types: WeakReference, SoftReference, and PhantomReference. Now, I could give you a detailed analysis of all of these types, but instead I will point you to the very well written blog post by Ethan Nicholas.

Read away!


Written by John Gunderman

July 10, 2009 at 7:02 pm

Posted in Uncategorized

2 Responses

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