Почему не проходит по 2-м пунктам?

package com.javarush.task.task26.task2613;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class CurrencyManipulatorFactory {

    private static Map map = new HashMap<>();

    private CurrencyManipulatorFactory() {

    }

    public static CurrencyManipulator getManipulatorByCurrencyCode(String currencyCode) {
        if (!map.containsKey(currencyCode.toUpperCase()))
            map.put(currencyCode, new CurrencyManipulator(currencyCode.toUpperCase()));
        return map.get(currencyCode.toUpperCase());
    }

    public static Collection getAllCurrencyManipulators(){
        return map.values();
    }
}