String dataStr = "      Возмем, для примера вот эту самую строку  ";

    private static String baseToString(String value) {
        return value == null ? "" : value;
    }

    private static int charsLeftIndex(final String string, final String chars) {
        int index = 0;
        final int length = string.length();
        while (index < length && chars.indexOf(string.charAt(index)) > -1) {
            index += 1;
        }
        return index == length ? -1 : index;
    }

    public static String trimStart(final String string, final String chars) {
        final String localString = baseToString(string);
        if (localString.isEmpty()) {
            return localString;
        }
        final String localChars;
        if (chars == null) {
            localChars = " ";
        } else {
            localChars = chars;
        }
        final int leftIndex = charsLeftIndex(localString, localChars);
        return leftIndex > -1 ? localString.substring(leftIndex, localString.length()) : localString;
    }

    private static int charsRightIndex(final String string, final String chars) {
        int index = string.length() - 1;
        while (index >= 0 && chars.indexOf(string.charAt(index)) > -1) {
            index -= 1;
        }
        return index;
    }

    public static String trimEnd(final String string, final String chars) {
        final String localString = baseToString(string);
        if (localString.isEmpty()) {
            return localString;
        }
        final String localChars;
        if (chars == null) {
            localChars = " ";
        } else {
            localChars = chars;
        }
        final int rightIndex = charsRightIndex(localString, localChars);
        return rightIndex > -1 ? localString.substring(0, rightIndex + 1) : localString;
    }