{"id":54118,"library":"commons-collections","title":"Apache Commons Collections","description":"Apache Commons Collections extends the Java Collections Framework with additional collection types and utilities.","status":"active","version":"3.2.2","language":"java","source_language":null,"source_url":null,"tags":["collections","apache","utilities","commons"],"install":[{"cmd":"<dependency>\n  <groupId>commons-collections</groupId>\n  <artifactId>commons-collections</artifactId>\n  <version>3.2.2</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'commons-collections:commons-collections:3.2.2'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"CollectionUtils","correct":"org.apache.commons.collections.CollectionUtils"}],"quickstart":{"code":"import org.apache.commons.collections.CollectionUtils;\nimport java.util.Arrays;\nimport java.util.List;\n\npublic class Example {\n    public static void main(String[] args) {\n        List<String> list = Arrays.asList(\"a\", \"b\");\n        System.out.println(CollectionUtils.isEmpty(list));\n    }\n}","lang":"java","description":"Use CollectionUtils to check if a collection is empty."},"warnings":[{"fix":"Upgrade to commons-collections4 (org.apache.commons:commons-collections4) or apply security patches.","message":"Commons Collections 3.x has known deserialization vulnerabilities (e.g., CVE-2015-7501).","severity":"breaking","affected_versions":"<=3.2.2"}],"env_vars":null,"search_vec":"'addit':13 'apach':1,4,19 'collect':3,6,10,14,18 'common':2,5,21 'extend':7 'framework':11 'java':9 'type':15 'util':17,20","created_at":"2026-06-15T08:47:35.942282+00:00","updated_at":"2026-06-15T08:47:35.942282+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":null,"github":null,"docs":"https://appdoc.app/artifact/commons-collections/commons-collections/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["utility"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-15","next_check":"2026-12-12","install_tag":null}}