[concurrency-interest] Handling Null Values in ConcurrentHashMap

[Bob Lee]

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