[zip two lists to map]#Java

ListZipToMap.java

// both are good to use, but cannot tolerate the situation when key or value inside the list is null

public static <K, V> Map<K, V> zipToMap(List<K> keys, List<V> values) {
    return IntStream.range(0, keys.size()).boxed()
            .collect(Collectors.toMap(keys::get, values::get));
}



public static <K, V> Map<K, V> zipToMap(List<K> keys, List<V> values) {
    Iterator<K> keyIter = keys.iterator();
    Iterator<V> valIter = values.iterator();
    return IntStream.range(0, keys.size()).boxed()
            .collect(Collectors.toMap(_i -> keyIter.next(), _i -> valIter.next()));
}