src/main/java/org/jboss/util/Strings.java
public static String trimLeadingCharacter(String str, CharacterChecker checker)
   {
      if (hasLength(str) == false)
      {
         return str;
      }

      if (checker == null)
         throw new IllegalArgumentException("Null character checker");

      StringBuffer buf = new StringBuffer(str);
      while (buf.length() > 0 && checker.isCharacterLegal(buf.charAt(0)))
      {
         buf.deleteCharAt(0);
      }
      return buf.toString();
   }
public static String trimLeadingCharacter(String str, CharacterChecker checker)
   {
      if (hasLength(str) == false)
      {
         return str;
      }

      if (checker == null)
         throw new IllegalArgumentException("Null character checker");

      StringBuffer buf = new StringBuffer(str);
      while (buf.length() > 0 && checker.isCharacterLegal(buf.charAt(0)))
      {
         buf.deleteCharAt(0);
      }
      return buf.toString();
   }
Trim all occurences of the supplied leading character from the given String.

@param str the string to check
@param checker the character checker
@return the trimmed String