require 'slf4j' require 'slf4j/jul' SLF4J.require_adapter( 'jul-to-slf4j' ) module SLF4J::JUL # Replace any existing configured root java.util.Logger Handlers with # the org.slf4j.bridge.SLF4JBridgeHandler def self.replace_root_handlers root_logger = root root_logger.handlers.each do |handler| root_logger.remove_handler( handler ) end handler = Java::org.slf4j.bridge.SLF4JBridgeHandler.new root_logger.add_handler( handler ) end end