CODEWITHSUNDEEP
javathread-safetysynchronized
peter
peter

Reputation: 8473

Ways to make non-synchronized data structure thread safe

I am wondering is there any other way to make a non-synchronized data structure to be thread safe other than using synchronized data structure like Hashtable and Vector, or using a wrapper like Collections.synchronizedList(List<T> arg) or Collections.synchronizedMap(Map<K,V> arg) ?

I was asked on the interview that how to make a hashmap thread safe, and I told him to use Hashtable or ConcurrentHashMap or use the Collections.synchronizedMap wrapper, however, seems like these answers is not what he is looking for

Upvotes: 5

Views: 688

Answers (2)

Keppil
Keppil

Reputation: 46219

Yes, you can make it immutable. This is actually an excellent way to make code thread safe in many situations.

Upvotes: 4

Cratylus
Cratylus

Reputation: 54074

Yes. If you do the synchronization of the construct yourself. But this is not recommended for apparent reasons...

Upvotes: 2

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