// "Replace with collect" "true" package com.google.common.collect; import java.util.*; import java.util.stream.Collectors; import java.util.stream.IntStream; class Maps { public static <K, V> HashMap<K, V> newHashMap() { return new HashMap<K, V>(); } } public class Test { public void test() { Map<String, Integer> map = IntStream.range(0, 10).filter(i -> i % 2 == 0).collect(Collectors.toMap(String::valueOf, i -> i, (a, b) -> b)); System.out.println(map); } }