void (String[] args) { String s = ""; C c1; C c2 = new C(); for (int i = 0; i < 100; i++) { s <warning descr="String concatenation '+=' in loop">+=</warning> "x"; C c = new C(); c.s += "p"; c1 = new C(); c1.s += "x"; c2.s <warning descr="String concatenation '+=' in loop">+=</warning> "y"; } System.out.println(s); }