- final variables are constants
- once a final variable is initialized the value cannot be changed
- it is a good practice to name variables with UPPER CASE
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- if a final variable is not initialized at the time of the declaration is known as a blank final variable
- the blank final variable must be initialized
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final methods CANNOT be overriden by subclass
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BUT final methods CAN be called by subclass
- final classes cannot be extended by subclass
