How to receive difference of maps in java?

Question

I have two maps:

Map map1;
Map map2;

I need to receive difference between these maps. Does exist ma

Answer 1

Building on Vlad's example to work with maps of different sizes

public static  Map mapDiff(Map left, Map right) {
        Map difference = new HashMap<>();
        difference.putAll(left);
        difference.putAll(right);

        difference.entrySet().removeAll(left.size() <= right.size() ? left.entrySet() : right.entrySet());

        return difference;
    }