Get String from List of Maps in Java 8

I have: List<Map<String, String>> countries and I was able to get value which I am interested in by this:

    String value = "";
    for (int i = 0; i < countries.size(); i++) {
        Map<String, String> map = countries.get(i);
        if (map.containsValue(country)) {
            value = map.get(COUNTRY_NAME);
        }
    }
    return value;

so in general - if in map is country which I am interested in then I take value where key is COUNTRY_NAME.

How can I translate it to streams? I tried this way:

for (Map<String, String> m : countries) {
        description = String.valueOf(m.entrySet()
                .stream()
                .filter(map -> map.getValue().equals(country))
                .findFirst());
        }

but first it doesn't work, second I still used for each loop.

You need to filter map if it's containsValue then transform your data using .map() then after .findFirst() use .orElse() to return default value if not found.

String value = countries.stream()
                        .filter(m -> m.containsValue(country))
                        .map(m -> m.get(COUNTRY_NAME))
                        .findFirst()
                        .orElse("");

I think you can try:

Stream.of(countries).reduce(Stream::concat)
                    .filter(map -> map.getValue().equals(country))
                    .findFirst();

That page seems to show things that can help you.

Check this:

	   Optional<Map<String, String>> countryOpt = countries
    	   .stream()
    	   .filter(c -> c.containsValue(COUNTRY_NAME))
    	   .findAny();
	   if (countryOpt.isPresent()) {
		   value = countryOpt.get().get(COUNTRY_NAME);
	   }

Optional<String> countryOptional = countries.stream()
			.filter(kvp -> kvp.containsKey(COUNTRY_NAME))
			.map(kvp -> kvp.get(COUNTRY_NAME))
			.findFirst();