{"id":54066,"library":"slf4j-log4j12","title":"SLF4J LOG4J-12","description":"A binding for SLF4J that routes logging calls to Log4j 1.2, now relocated to slf4j-reload4j.","status":"active","version":"2.0.18","language":"java","source_language":null,"source_url":"https://github.com/qos-ch/slf4j","tags":["logging","slf4j","log4j","binding"],"install":[{"cmd":"<dependency>\n  <groupId>org.slf4j</groupId>\n  <artifactId>slf4j-log4j12</artifactId>\n  <version>2.0.18</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.slf4j:slf4j-log4j12:2.0.18'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"Logger","correct":"org.slf4j.Logger"}],"quickstart":{"code":"import org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\n\npublic class Example {\n    private static final Logger logger = LoggerFactory.getLogger(Example.class);\n\n    public void doSomething() {\n        logger.info(\"Doing something\");\n    }\n}","lang":"java","description":"Use SLF4J Logger to log messages, which are routed to Log4j 1.2."},"warnings":[{"fix":"Replace dependency with org.slf4j:slf4j-reload4j.","message":"This artifact is deprecated; use slf4j-reload4j instead.","severity":"breaking","affected_versions":">=2.0.0"}],"env_vars":null,"search_vec":"'-12':3 '1.2':14 'bind':5,24 'call':11 'log':10,21 'log4j':2,13,23 'reload4j':20 'reloc':16 'rout':9 'slf4j':1,7,19,22 'slf4j-reload4j':18","created_at":"2026-06-15T08:32:38.098611+00:00","updated_at":"2026-06-15T08:32:38.098611+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":"http://www.slf4j.org","github":"https://github.com/qos-ch/slf4j","docs":"https://appdoc.app/artifact/org.slf4j/slf4j-log4j12/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["logging"],"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}}