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

Here is a simple snippet you can use instead of massive Guava library:

public static  Map mapDifference(Map left, Map right) {
    Map difference = new HashMap<>();
    difference.putAll(left);
    difference.putAll(right);
    difference.entrySet().removeAll(right.entrySet());
    return difference;
}

Check out the whole working example