// "Replace with collect" "true" package com.google.common.collect; import java.util.*; class Maps { public static HashMap newHashMap() { return new HashMap(); } } public class Test { public void test() { Map map = Maps.newHashMap(); for(int i=0; i<10; i++) { if(i%2 == 0) { map.put(String.valueOf(i), i); } } System.out.println(map); } }