/**
* Constructs a String of the fixed length given. If the string passed in is greater than length,
* then the string is truncated to length. If the string is greater than length then the string is
* padded with spaces. If s is empty or null, then an empty string of spaces is returned.
*
* @param s - string to operate on
* @param length - desired length
* @return - fixed length String
*/
public static String createFixedLengthString(String s, int length) {
String result = null;
if (StringUtil.isEmpty(s)) {
StringBuffer sb = new StringBuffer(length);
for (int i = 0; i < length; i++) {
sb.append(" ");
}
result = sb.toString();
} else {
if (s.length() == length) {
result = s;
} else if (s.length() > length) {
result = s.substring(0, length);
} else { // s.length() is < length
StringBuffer sb = new StringBuffer(length);
sb.append(s);
for (int i = s.length(); i < length; i++) {
sb.append(" ");
}
result = sb.toString();
}
}
return result;
}
