Java Programming for beginners: Learn Java Development in this illustrated step by step Coding Guide by Mastery White Belt

Java Programming for beginners: Learn Java Development in this illustrated step by step Coding Guide by Mastery White Belt

Author:Mastery, White Belt [Mastery, White Belt]
Language: eng
Format: epub
Published: 2020-07-28T16:00:00+00:00


Line 7 declares a final field num and initializes it to 10

Line 9 tries to update num to 20 which causes a compilation error

Since a final variable cannot be modified, it must be initialized at the time of declaration

9.3

Summary

The final keyword can be used with methods and instance fields

A final method cannot be overridden

A final field cannot be modified after it is declared

10

Packages and Imports

A package helps to group together a set of related Java files. An Import is used to include the classes and interfaces defined in a package in the current code

10.1



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