Java Interview Question

Use this intermediate question and answer to prepare for your next Java interview.

Is it recommended to use the final keyword in method parameters?


Yes, Java is a Pass-by-Value language, so all the variables are local to the current method. Changing the value of the method parameter will not result in any changes in the calling method. To avoid mistakes and make the code more readable, marking the method parameters final is the best approach. This also makes it mandatory for the developer to explicitly create another variable which is defined within the method in case the reference needs to be changed.

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