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Question

How to externally synchronize hashmap?

a.

HashMap.synchronize(HashMap a);

b.

HashMap a = new HashMap();
a.synchronize();

c.

Collections.synchronizedMap(new HashMap<String, String>());

d.

Collections.synchronize(new HashMap<String, String>());

Posted under Java Programming

Answer: (c).Collections.synchronizedMap(new HashMap<String, String>());

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