Java tutorial
import java.util.ArrayList; import java.util.List; public class Main { public static void main(final String[] args) { List<String> stringCollection = new ArrayList<>(); stringCollection.add("ddd2"); stringCollection.add("aaa2"); stringCollection.add("bbb1"); stringCollection.add("aaa1"); stringCollection.add("bbb3"); stringCollection.add("ccc"); stringCollection.add("bbb2"); stringCollection.add("ddd1"); boolean noneStartsWithZ = stringCollection.stream().noneMatch((s) -> s.startsWith("z")); System.out.println(noneStartsWithZ); // true } }