code: public static void configure(File file) {
  		FileInputStream fis = null;
  		try {
  			fis = new FileInputStream(file);
  			configure(fis);
  		} catch (FileNotFoundException e) {
  			LOG.error("File not found " + file, e);
  			e.printStackTrace();
  		} finally {
  			if (fis != null) {
  				try {
  					fis.close();
  				} catch (IOException e) {
  					LOG.error("Cannot close file " + file, e);
  					e.printStackTrace();
  				}
  			}
  		}
  	}
docs: Configure SLF4J.
  
  @param file logback configuration file