If ArrayList is empty

  import java.util.ArrayList;

public class Main {
  public static void main(String args[]) {
    ArrayList<String> al = new ArrayList<String>();

    al.add("C");
    al.add("java2s.com");
    al.add("D");
    al.add("F");
    al.add(1, "java2s.com");
    System.out.println(al.isEmpty());

    al.clear();
    System.out.println(al.isEmpty());
  }

}