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Java Programming · Q100

Java Collections Framework

Programming · Java Programming · question 100

Q100

How to externally synchronize hashmap?

A.
HashMap.synchronize(HashMap a);
B.
HashMap a = new HashMap();
a.synchronize();
C.
Collections.synchronizedMap(new HashMap<String, String>());
Answer
D.
Collections.synchronize(new HashMap<String, String>());

Answer: Option C

Solution

Answer: Option C
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