Hello all;

This is a combined review for the new default methods on the java.util.Map 
interface being added for the JSR-335 lambda libraries. The reviews are being 
combined because they share a common unit test.

http://cr.openjdk.java.net/~mduigou/JDK-8010122/0/webrev/

8004518: Add in-place operations to Map
 forEach()
 replaceAll()

8010122: Add atomic operations to Map
 getOrDefault()       
 putIfAbsent()          *
 remove(K, V)
 replace(K, V)
 replace(K, V, V)
 compute()              *
 merge()                *
 computeIfAbsent()      *
 computeIfPresent()     *

The * operations treat null values as being absent. (ie. the same as there 
being no mapping for the specified key).

The default implementations provided in Map are overridden in HashMap for 
performance purposes, in Hashtable for atomicity and performance purposes and 
in Collections for atomicity.

Mike
 

Reply via email to