Private final List<Client> running = Collections.synchronizedList(new ArrayList<Client>()); what is use

Question

Java

The_MSP

Private final List<Client> running = Collections.synchronizedList(new ArrayList<Client>()); what is use

of synchronisedList() ? Is it just to make the list access threadsafe ? or is there any other usage of this?

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24.01.2019

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Dmytro Buryak · Accepted Answer

Dmytro Buryak

Exactly, just to make it's access methods thread safe. But the most useful form is java.util.Collections#synchronizedList(java.util.List<T>, java.lang.Object) where you can specify "lock" object. Knowing that object you can do compound actions atomically, like: syncList = Collections.synchronizedList(list, mutex); synchronized (mutex) { if (syncList.size() > 42) { syncList.clear() } else { ..... }

0

24.01.2019

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Private final List<Client> running = Collections.synchronizedList(new ArrayList<Client>()); what is use

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