import java.util.Collections;
import java.util.Hashtable;
import java.util.Map;
import java.util.function.BiConsumer;

public class Frequence<T> {
    public T mostFrequent(T[] tab) {
        Hashtable<T, Integer> indexList = new Hashtable<T, Integer>();

        for (T element : tab) {
            indexList.put(element, indexList.get(element) == null ? 1 : ((Integer)indexList.get(element)) + 1);
        }

        T element = tab[0];
        Integer count = indexList.get(tab[0]);

        for(Map.Entry<T, Integer> entry : indexList.entrySet()) {
            if (entry.getValue() > count) {
                element = entry.getKey();
                count = entry.getValue();
            }
        }

        return element;
    }

    public static void main(String[] args) {
        Frequence<String> f = new Frequence<String>();

        String[] tab = {"test", "test", "test", "12", "12", "12", "12"};

        System.out.println(f.mostFrequent(tab));
    }
}