How can I Sum arrays lengths from arraylist Java

Question

How can i sum arrays lenghts from arraylist, i want to get sum of string lenght from arrays and print the sum

the bug is in main

public class Listy {
public static void main(String[] Listy) {

    List<String[]> words = new ArrayList<>();
    words.addAll(Arrays.asList((["Pat"], ["Michał"],))
    System.out.println(getSumOfLenghts(a));




    public static int getSumOfLenghts(List<String[]> words) {
    int sum = 0;

    for (String[] currentarray:words) {
        sum += currentarray.length;
    }
    return sum;
}

Answer 1

As @shmosel comment, you get the errors because you did not declared a array as java syntax, you have a list of String array:

I edited your code as below and it's work:

public static void main(String[] args) {
    
    List<String[]> words = new ArrayList<>();
    words.add(new String[]{"Pat", "Michal"});
    words.add(new String[]{"Pat 2", "Michal 2"});
    System.out.println(getSumOfLenghts(words));
}

Edit: To answer your question on comment, I have create this example, that contains two function:

1. getSumOfLenghts this function return how much String in the list

2. getSumOfEachStringLenghts this function return the sum of all the String in the list.

   public class Listy {
   
   public static void main(String[] args) {
       List<String[]> words = new ArrayList<>();
       words.add(new String[]{"Pat", "Michal"});
       words.add(new String[]{"Pat 2", "Michal 2"});
       System.out.println(getSumOfLenghts(words));
       System.out.println(getSumOfEachStringLenghts(words));
   }
   
   public static int getSumOfLenghts(List<String[]> words) {
       int sumArrElem = 0;
   
       for (String[] currentarray:words) {
           sumArrElem += currentarray.length;
       }
       return sumArrElem;
   }
   
   public static int getSumOfEachStringLenghts(List<String[]> words) {
       int sumForEachElem = 0;
   
       for (String[] currentarray:words) {
           for (String s : currentarray) {
               sumForEachElem += s.length();
           }
       }
       return sumForEachElem;
   }
   }