Public class Ex3 21

Static void fun (int

A, String

B, String c) i

A=a+ 1;

trim () ;

C=b; }

Public static void main (String] args) l

Int a= 0;

String b= "Hello World" ;

String C= "OK";

Fun (a,

B, c) ;

System. out println(""+a+", "+b+", "+ c) ; 1}

Class F{

Public F() (

System. Out print ('F() is called!") ;)

Class S extends Fl.

Public s (){

System. out print ("S () is called!") ; )

Public class Ex_24｛

Public static void main (String argsll)

S sa=new S（）：｝