Sanalista

input/sanalista.java:5: error: class Sanalista is public, should be declared in a file named Sanalista.java
public class Sanalista {
       ^
1 error

import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;

public class Sanalista {
    public static void main(String args[]) {
        Scanner input = new Scanner(System.in);

        int words_amount = input.nextInt();
        int wweaol = 0;
        List<String> checked_chars = new ArrayList<String>();

        for (int i=0; i<words_amount; i++) {
            String current_word = input.next();
            boolean even_amount = false;

            if (current_word.length() % 2 == 0) {
                for (int j=0; j<current_word.length(); j++) {
                    char current_character = current_word.charAt(j);
                    int chars_found = 0;

                    for (int k=j++; k<current_word.length(); k++) {
                        if (current_word.charAt(k) == current_character) {
                            chars_found++;
                        }
                    }

                    if (chars_found % 2 == 0) {
                        even_amount = true;
                    }
                }

                if (even_amount) {
                    wweaol++;
                }
            }      
        }

        System.out.println(wweaol);
    }
}