import java.io.UnsupportedEncodingException;
import java.util.logging.Logger;
public class Main { public static void main(String[] args) {
  Logger logger = Logger.getLogger(Main.class.getName());
  logger.info("Start process...");
  try {
    "".getBytes("invalidCharsetName");
  } catch (UnsupportedEncodingException e) {
    // TODO: 使用logger.severe()打印异常
    logger.info("===========");
    e.printStackTrace();
    logger.info("===========");
    //log​(Level level, String msg, Throwable thrown)
    logger.log(logger.getLevel(), "e=", e);
    }
    logger.info("Process end.");
  }
}