What are the uses of final method?

Question

I understand what a final method is but what are the uses of declaring one as final?

Answer 1

There are primarily two reasons for making a method final:

• Subclasses are restricted from changing the meaning or functionality of the method. (Overriding)
• It also helps in increasing the efficiency of the code by providing the compiler the means to convert the calls to the method into inline java code. 

  

Taking a good java course in a well-structured manner should clarify a lot of doubts you may have on a fundamental level.