Java tutorial
//package com.java2s; //License from project: Open Source License import java.util.*; public class Main { public static Map<String, Object> getMapValueSubset(Map<String, Object> list, String pattern) { HashMap<String, Object> result = new HashMap<>(); for (String key : list.keySet()) { if (key.matches(pattern)) { result.put(key, list.get(key)); } } return result; } }