{"id":54138,"library":"commons-collections4","title":"Apache Commons Collections4","description":"Apache Commons Collections4 provides types that extend and augment the Java Collections Framework with additional data structures and utilities.","status":"active","version":"4.5.0","language":"java","source_language":null,"source_url":"https://gitbox.apache.org/repos/asf?p=commons-collections.git","tags":["collections","utilities","apache","data-structures"],"install":[{"cmd":"<dependency>\n  <groupId>org.apache.commons</groupId>\n  <artifactId>commons-collections4</artifactId>\n  <version>4.5.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.apache.commons:commons-collections4:4.5.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"CollectionUtils","correct":"org.apache.commons.collections4.CollectionUtils"}],"quickstart":{"code":"import org.apache.commons.collections4.CollectionUtils;\nimport java.util.Arrays;\nimport java.util.List;\n\npublic class Quickstart {\n    public static void main(String[] args) {\n        List<String> list1 = Arrays.asList(\"a\", \"b\", \"c\");\n        List<String> list2 = Arrays.asList(\"b\", \"c\", \"d\");\n        System.out.println(CollectionUtils.intersection(list1, list2));\n    }\n}","lang":"java","description":"Finds the intersection of two lists using CollectionUtils."},"warnings":[],"env_vars":null,"search_vec":"'addit':18 'apach':1,4,25 'augment':12 'collect':15,23 'collections4':3,6 'common':2,5 'data':19,27 'data-structur':26 'extend':10 'framework':16 'java':14 'provid':7 'structur':20,28 'type':8 'util':22,24","created_at":"2026-06-15T08:48:26.890771+00:00","updated_at":"2026-06-15T08:48:26.890771+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":"https://commons.apache.org/proper/commons-collections/","github":null,"docs":"https://appdoc.app/artifact/org.apache.commons/commons-collections4/","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}}