code: public static String printStackTraceElement(StackTraceElement stackTraceElement) {
          final String toString;
          if (stackTraceElement == null) {
              toString = "at null";
          }
          // Look for our eyecatcher representing a truncation
          else if (TRIMMED_STACK_TRACE_ELEMENT.equals(stackTraceElement)) {
              // Use only the class name, which is actually [internal classes]
              toString = "at " + stackTraceElement.getClassName();
              // Look for our eyecatcher representing a the stripping of redundant cause frames
          } else if (DUPLICATE_FRAMES_EYECATCHER.equals(stackTraceElement.getMethodName())) {
              // Use only the class name, which will include the ... - we don't want a "at " in this case
              toString = stackTraceElement.getClassName();
          } else {
              // The 'at' is a non-internationalised string in what we're trying to imitate   
              toString = "at " + stackTraceElement.toString();
          }
          return toString;
      }
docs: Unfortunately, toString() isn't good enough since we may have elements in the stack representing
  internal classes, and they don't toString() well.