![class Bike9{
final int speedlimit=90;//final variable
void run(){
speedlimit=400;
}
public static void main(String args[]){
Bike9 obj=new Bike9();
obj.run();
}
}//end of class
Output:Compile Time Error](https://image.slidesharecdn.com/finalkeywordinjava-241115151244-553f7da9/85/The-final-keyword-in-java-is-used-to-restrict-the-user-4-320.jpg)
![Java final method
If you make any method as final, you cannot override it.
Java final method
If you make any method as final, you cannot override it.
Example of final method
class Bike{
final void run(){System.out.println("running");}
}
class Honda extends Bike{
void run(){System.out.println("running safely with 100kmph");}
public static void main(String args[]){
Honda honda= new Honda();
honda.run();
}
}
Output:Compile Time Error](https://image.slidesharecdn.com/finalkeywordinjava-241115151244-553f7da9/85/The-final-keyword-in-java-is-used-to-restrict-the-user-5-320.jpg)
![Java final class
If you make any class as final, you cannot extend it.
Example of final class
final class Bike{}
class Honda1 extends Bike{
void run(){System.out.println("running safely with 100kmph");}
public static void main(String args[]){
Honda1 honda= new Honda1();
honda.run();
}
}
Output:Compile Time Error](https://image.slidesharecdn.com/finalkeywordinjava-241115151244-553f7da9/85/The-final-keyword-in-java-is-used-to-restrict-the-user-6-320.jpg)
The final keyword in java is used to restrict the user.
- 1. Final Keyword In Java Mrs.S.KAVITHA ASSISTANT PROFESSOR DEPARTMENT OF COMPUTER SCIENCE SRI SARADA NIKETAN COLLEGE OF SCIENCE FOR WOMEN,KARUR
- 2. • The final keyword in java is used to restrict the user. java final keyword can be used in many context. Final can be: • variable • method • class
- 3. Java final variable • If you make any variable as final, you cannot change the value of final variable(It will be constant). Example of final variable • There is a final variable speedlimit, we are going to change the value of this variable, but It can't be changed because final variable once assigned a value can never be changed.
- 4. class Bike9{ final int speedlimit=90;//final variable void run(){ speedlimit=400; } public static void main(String args[]){ Bike9 obj=new Bike9(); obj.run(); } }//end of class Output:Compile Time Error
- 5. Java final method If you make any method as final, you cannot override it. Java final method If you make any method as final, you cannot override it. Example of final method class Bike{ final void run(){System.out.println("running");} } class Honda extends Bike{ void run(){System.out.println("running safely with 100kmph");} public static void main(String args[]){ Honda honda= new Honda(); honda.run(); } } Output:Compile Time Error
- 6. Java final class If you make any class as final, you cannot extend it. Example of final class final class Bike{} class Honda1 extends Bike{ void run(){System.out.println("running safely with 100kmph");} public static void main(String args[]){ Honda1 honda= new Honda1(); honda.run(); } } Output:Compile Time Error