This manual is for an old version of Hazelcast Jet, use the latest stable version.
JetInstance jet = Jet.newJetInstance();
IStreamMap<String, Integer> map = jet.getMap("latitudes");
map.put("London", 51);
map.put("Paris", 48);
map.put("NYC", 40);
map.put("Sydney", -34);
map.put("Sao Paulo", -23);
map.put("Jakarta", -6);
map.stream().filter(e -> e.getValue() < 0).forEach(System.out::println);