how does weakhashmap work?

 

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  • When would you use a WeakHashMap or a WeakReference? 10 answers

    • You must not use String literals with WeakHashMap (well you can but there would be no point in it): 

    String myKey = "somekey";

    instead you must use: 

    String myKey = new String("somekey");

    In the latter case String is not pooled.

    The word 'obsolete' is imprecise. The condition in question is 'garbage-collected'. A value is removed from the WeakHashMap when and if the key is garbage-collected. Period.

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