Q100

Which statement will emoty the contents of a StringBuilder variable named sb?
A.
sb.deleteAll();
B.
sb.delete(0, sb.size());
C.
sb.delete(0, sb.length());
D.
sb.removeAll();

Risposta B:

Risposta C:

             StringBuilder sb=new StringBuilder();

             sb.append("pippo");

             sb.delete(0, sb.length());

             System.out.println(sb.toString());