Java tutorial
import org.apache.commons.lang.CharSet; import org.apache.commons.lang.CharRange; import org.apache.commons.lang.ArrayUtils; public class CharSetExampleV1 { public static void main(String args[]) { CharSet set = CharSet.getInstance("the apprentice"); System.err.println(set.contains('q')); CharRange[] range = set.getCharRanges(); System.err.println(ArrayUtils.toString(range)); } }