How to remove an element of a HashMap whilst streaming (lambda)

Question

I have the following situation where I need to remove an element from a stream.

map.entrySet().stream().filter(t -> t.getValue().equals("0")).             forEach(t -> map.remove(t.getKey())); 

in pre Java 8 code one would remove from the iterator - what's the best way to deal with this situation here?

Answer 1

map.entrySet().removeIf(entry -> entry.getValue().equals("0")); 

You can't do it with streams, but you can do it with the other new methods.

EDIT: even better:

map.values().removeAll(Collections.singleton("0"));