Java 8 Lambda, filter HashMap, cannot resolve method

Question

I\'m kinda new to Java 8\'s new features. I am learning how to filter a map by entries. I have looked at this tutorial and this post for my problem, but I am unable to solve.

Answer 1

The message is misleading but your code does not compile for another reason: collect returns a Map not a HashMap.

If you use

Map map = new HashMap<>();

it should work as expected (also make sure you have all the relevant imports).