[concurrency-interest] Handling Null Values in ConcurrentHashMap

Bob Lee crazybob at crazybob.org
Fri May 12 12:30:34 EDT 2006


On 5/12/06, Doug Lea <dl at cs.oswego.edu> wrote:
> Would it be easier to declare somewhere
>    static final Object NULL = new Object();
> and replace all use of nulls in uses of maps with NULL?

Enums also work great here:
http://crazybob.org/2005/12/null-placeholders-in-jdk-15.html

Bob



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