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.



You May Interest

How Will You Define the Scope of a Bean in Spring ?

What is the Purpose of Native Method in Java ?

What are the Examples of Observer Design Pattern in JDK ?

Does Java Allow Virtual Functions ?

What are the Differences Between Internal and External Iterator i ...