Why swears at length?

Question

Java

When executing the code, it gives an error - /src/main/java/Kata.java:3: error: cannot find symbol
for(int i = 0; i < haystack.length(); i++){
^
symbol: method lenght()
location : variable haystack of type Object[]

Code:

public class Kata {
  public static String findNeedle(Object[] haystack) {
    for(int i = 0; i < haystack.length(); i++){
      if(haystack[i] == "needle"){
        return "found the needle at position " + i;
      }
    }
    return "Makaron3000";
  }
}

Answer 1

haystack.lenght - no brackets

Answer 2

parentheses are put when it is a method and it can accept something, or not (but theoretically it can), and the field, by definition, cannot accept any parameters, therefore they do not have brackets