void (List<String> list) { for (String s : list) { if (s != null) { if (s.startsWith("x")) { System.out.println("Ok!"); break; } } } if(list.size() > 2) { for (String x : list) { if (x != null) { if (x.startsWith("x")) { System.out.println("Ok!"); break; } } } } if(list.size() > 2) { boolean b = false; for (String x : list) { if (x != null) { if (x.startsWith("x")) { b = list.size() < 10; break; } } } if (b) { System.out.println("Ok!"); } } if(list.size() > 2 || list.stream().filter(x -> x != null).anyMatch(x -> x.startsWith("x"))) { // not supported System.out.println("Ok!"); } }