final method

[Former Member]

hello ! i m a beginner in java and trying 4 job.Kindly help me in solving these questions.

class Base {

public final void amethod(){

System.out.println(" amethod");

}

}

public class Fin extends Base{

public static void main(String argv[]){

Base b=new Base();

b.amethod();

}

}

Options---

1. Compile time error indicating that a class with any final methods must be declared final itself .

2.Compile time error indicating that you cannot inherit from a class with final methods.

3.Run time error indicating that Base is not defined as final.

4.Success in compilation and output of "amethod" at run time.

[Former Member · Accepted solution]

Hi Payal,

The answer will be 4).

In case only a method is declared "final", the restriction is that the inherited classes can not override it. I.e. if the class Fin had :

public final void amethod(){

System.out.println(" bmethod");

}

then the compilation would fail. However that's not the case and everything will run.

[Former Member]

hi Payal,

Option 4 is correct. The code will successfully compile and output of "amethod" at run time.

Regards,

Richa