I''m sure I read somewhere that it was a deliberate choice not to make it, to 
stop people using the very common pattern of creating the object in the try() - 
which isn't much use for a lock. 

Greg
-- 
Sent from my iPhone

> On 24 Jun 2016, at 00:45, Remko Popma <remko.po...@gmail.com> wrote:
> 
> Good idea! 
> Maybe propose this for Java 9?
> Looks very reasonable to me. 
> 
> Sent from my iPhone
> 
>> On 2016/06/24, at 8:32, Gary Gregory <garydgreg...@gmail.com> wrote:
>> 
>> I wonder if anyone knows why Lock is not AutoCloseable.
>> 
>> This:
>> 
>>     public static boolean hasManager(final String name) {
>>         LOCK.lock();
>>         try {
>>             return MAP.containsKey(name);
>>         } finally {
>>             LOCK.unlock();
>>         }
>>     }
>> 
>> 
>> Seems lame in comparison to:
>> 
>>     public static boolean hasManager(final String name) {
>>         try (LOCK.lock()) {
>>             return MAP.containsKey(name);
>>         }
>>     }
>> 
>> Which, due to syntax really would be:
>> 
>>     public static boolean hasManager(final String name) {
>>         try (Object o = LOCK.lock()) {
>>             return MAP.containsKey(name);
>>         }
>>     }
>> 
>> Just wonderin'...
>> 
>> Gary
>> 
>> -- 
>> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org 
>> Java Persistence with Hibernate, Second Edition
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