code: public static final void loge(Class<?> clazz, String msg, Exception... e) {
          if (DEBUG) {
  
              String exceptionStr = "";
  
              if (e != null && e.length == 1) {
                  StringWriter sw = new StringWriter();
                  PrintWriter pw = new PrintWriter(sw);
                  e[0].printStackTrace(pw);
                  pw.flush();
                  exceptionStr = "exception = " + sw.toString();
              }
              System.err.println("[" + sSdf.format(new Date()) + "]" + "-" + "[" + clazz.getSimpleName() + "] " + msg + " " + exceptionStr);
          }
      }
docs: To output the error log message to the error out
  
  @param clazz
  @param msg
  @param e