wffweb/src/main/java/com/webfirmframework/wffweb/util/CssLengthUtil.java
public static Object[] getLengthValueAsPremitiveAndUnit(
            final String cssValue) {

        final String trimmedCssValue = StringUtil.strip(cssValue);
        final char[] cssValueChars = trimmedCssValue.toCharArray();

        int lengthSeparationIndex = -1;

        for (int i = cssValueChars.length - 1; i > -1; i--) {

            final char c = cssValueChars[i];

            if (!(c < '0' || c > '9')) {
                // is a number
                lengthSeparationIndex = i;
                break;
            }

        }

        final String value = StringUtil
                .strip(trimmedCssValue.substring(0, lengthSeparationIndex + 1));

        try {
            if (lengthSeparationIndex == (cssValueChars.length - 1)) {
                return new Object[] { Float.parseFloat(value) };
            }

            String unit = StringUtil.strip(
                    trimmedCssValue.substring(lengthSeparationIndex + 1));

            if (unit.length() == 1 && unit.charAt(0) == '%') {
                return new Object[] { Float.parseFloat(value),
                        CssLengthUnit.PER };
            } else {
                unit = unit.toUpperCase();
            }

            return new Object[] { Float.parseFloat(value),
                    CssLengthUnit.valueOf(unit) };
        } catch (final IllegalArgumentException e) {
            // there will be IllegalArgumentException if the CssLengthUtil is
            // invalid
            // there will be NumberFormatException if the value is invalid
            // if the given css value is invalid it should return an array with
            // length zero
            return new Object[0];
        }

    }
public static Object[] getLengthValueAsPremitiveAndUnit(
            final String cssValue) {

        final String trimmedCssValue = StringUtil.strip(cssValue);
        final char[] cssValueChars = trimmedCssValue.toCharArray();

        int lengthSeparationIndex = -1;

        for (int i = cssValueChars.length - 1; i > -1; i--) {

            final char c = cssValueChars[i];

            if (!(c < '0' || c > '9')) {
                // is a number
                lengthSeparationIndex = i;
                break;
            }

        }

        final String value = StringUtil
                .strip(trimmedCssValue.substring(0, lengthSeparationIndex + 1));

        try {
            if (lengthSeparationIndex == (cssValueChars.length - 1)) {
                return new Object[] { Float.parseFloat(value) };
            }

            String unit = StringUtil.strip(
                    trimmedCssValue.substring(lengthSeparationIndex + 1));

            if (unit.length() == 1 && unit.charAt(0) == '%') {
                return new Object[] { Float.parseFloat(value),
                        CssLengthUnit.PER };
            } else {
                unit = unit.toUpperCase();
            }

            return new Object[] { Float.parseFloat(value),
                    CssLengthUnit.valueOf(unit) };
        } catch (final IllegalArgumentException e) {
            // there will be IllegalArgumentException if the CssLengthUtil is
            // invalid
            // there will be NumberFormatException if the value is invalid
            // if the given css value is invalid it should return an array with
            // length zero
            return new Object[0];
        }

    }
gets the length value and unit as an array. For a cssValue
<code>555px</code>, the returned array may be used as

<pre>
Object[] lengthValueAsPremitiveAndUnit = CssLengthUtil
.getLengthValueAsPremitiveAndUnit(&quot;555px&quot;);
float value = (float) lengthValueAsPremitiveAndUnit[0];

// the object will be equal to CssLengthUnit.PX
CssLengthUnit unit = (CssLengthUnit) lengthValueAsPremitiveAndUnit[1];

Auto-boxing is done when the primitive value is stored in an object array
therefore there is no much advantage with this method.
[This method is left for future modification.]

</pre>

@param cssValue
the value from which the length value and unit
required to be parsed, Eg:- <code>555px</code>.
@return an array containing length and unit. The length will be in the
zeroth index as {@code float} (primitive type) type and its unit
in the first index as an object of {@code CssLengthUnit}. If the
given cssValue doesn't contain unit but contains value then an
array containing only length value (i.e. array having length one)
will be returned. For any invalid value it will return an empty
array (having length zero), specifically it will never return
null.

@author WFF
@since 1.0.0