class ReflectionUtil {
/**
* Strips all illegal charaters from the given lower case string.
* Illegal characters are all characters that are neither characters ('a' to 'z') nor digits ('0' to '9').
*
* @param s the original string
* @return the string with all illegal characters stripped
*/
public static String stripIllegalCharacters(String s)
{
char c;
boolean needsStrip = false;
StringBuffer sb;
if (s == null)
{
return null;
}
for (int i = 0; i < s.length(); i++)
{
c = s.charAt(i);
if (c >= '0' && c <= '9')
{
// continue
} // NOPMD
else if (c >= 'a' && c <= 'z')
{
// continue
} // NOPMD
else
{
needsStrip = true;
break;
}
}
if (!needsStrip)
{
return s;
}
sb = new StringBuffer(s.length());
for (int i = 0; i < s.length(); i++)
{
c = s.charAt(i);
if (c >= '0' && c <= '9')
{
sb.append(c);
}
else if (c >= 'a' && c <= 'z')
{
sb.append(c);
}
}
return sb.toString();
}
}
