public class lab14
{
int a,b;
public static void change(lab14 obj)
{
obj.a=20;
obj.b=10;
}
public static void main(String[] args)
{
  lab14 obj =new lab14();
 obj.a=10;
obj.b=20;
System.out.println("values before changing are a="+obj.a+"b="+obj.b);
change(obj);
System.out.println("values after changing are a="+obj.a+"b="+obj.b);
}
}