final, finally and finalize() in JAVA - When to use What

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All the three keywords final, finally and finalize() plays a very important role in JAVA. Final is a keyword used for declaration of variable which cannot be edited, finally is a segment of code used for code cleanup in case of an exception whereas finalize is a method used for object cleanup before garbage collection.

Use of final, finally and finalize

Final:- It is used in the following three cases:

1. If the final keyword is attached to a variable then the variable becomes constant i.e. its value cannot be changed in the program.
2. If a method is marked as final then the method cannot be overridden by any other method.
3. If a class is marked as final then this class cannot be inherited by any other class.  more...