Q22

Given:

             StringBuffer b = new StringBuffer("3");

            System.out.print(5+4+b+2+1);

 

What is the result?

 

A.

54321

 

B.

9321

 

C.

5433

 

D.

933

 

E.

Output is Similar to: 9java.lang.StringBuffer@100490121.

 

F.

Compilation fails.

                  

La risposta è F perchè The operator + is undefined for the argument type(s) int, StringBuffer .

Si potrebbe far compilare il codice in questo modo :

System.out.print(5+4+b.toString()+2+1);