How Will You Create a Shallow Copy of a Map in Java ?

In Java, most implementations of Map interface provide a constructor to create copy of another map. But the copy method is not synchronized.

Therefore, when a thread is copying the map, another thread can modify it.

To prevent such a scenario, we should use Collections.synchronizedMap() method to first create a thread-safe map.

Another way of to create a shallow copy is by using clone() method. But it is not considered as a recommended approach.

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