How does final modifier work?
- 1 Answers
- 2649 Views
- Tech Mahindra, I also Faced
- E-Mail Answers
Final in java is used to restrict user to change further. It is used in various context as below
Final variable
• As variable become final, its value will never be modified.
• The variables become read only variable forever.
• If final variable is static then it must be initialized at the time of declaration.
• A non-static final variable can be blank but must be initialized in constructor.
• A local variable can be final.
• Final variables usually come with static key word as constant.
Final method
• As method become final, it never be override but be overload.
• A final method can be static and synchronized but never be abstract.
• As we are sure that the method implementation is complete and will never be override then we should make it final.
Final class
• A final class is complete class and will never be sub-classed.
• Final class helps to define immutable class.
• There are some final classes like String, Integer and other wrapper classes.
| Is This Answer Correct ? | 5 Yes | 0 No |
Why are the methods of the math class static?
Is null a string or object in java?
What is the relationship between a method?s throws clause and the exceptions that can be thrown during the method?s execution?
What is parsing a string?
What is sortedmap in java?
System.out & System.in are final static data member of System class but we can change there reference through setOut() & setIn() method how...
What is the difference between yielding and sleeping in java programming?
What is the arguement of main method?
What are functions in java?
What is the use of 'super' keyword inside a constructor?
0 Answers Flextronics, Thomson Reuters, Virtusa,
What is the difference between Object and Instance?
What is structure of java heap? What is perm gen space in heap?
Core Java 
