Guess the output of given Java code when input string is

1) "NULL"

2) "Sanjay_Jayadev"

import java.util.*;
class Main {
  public static void main(String[] args) {
    Scanner kan = new Scanner(System.in);
    String str1 = kan.next();
    String str2 = kan.next();
    String str3 = "";
    String str4 = "";
    System.out.println(isNuEm(str1));
    System.out.println(isNuEm(str2));
    System.out.println(isNuEm(str3));
    System.out.println(isNuEm(str4));
  }
  public static String isNuEm(String str) {
    if (str == null) {
      return "NULL";
    }
    else if(str.isEmpty()){
      return "EMPTY";
    }
    else {
      return "neither NULL nor EMPTY";
    }
  }
}