java在异常处理(catch)中生成日志

public class LoggingException2 {    private static Logger logger=Logger.getLogger("LoggingException2");    static void logException(Exception e){        StringWriter trace=new StringWriter();        e.printStackTrace(new PrintWriter(trace));        logger.severe(trace.toString());    }    public static void main(String[] args){        try {            throw new NullPointerException();        }catch (NullPointerException e){            logException(e);        }    }}