code: public static int findFirstNotOf(String container, String chars, int begin){
  		//find the first occurrence of characters not in the charSeq	from begin forward	
  		for (int i = begin; i < container.length() && i >=0; ++i) 
  		   if (!chars.contains("" + container.charAt(i)))
  				return i;
  		return -1;
      }
docs: Find the first occurrence of characters not in the charSeq from begin
  
  @param container the container
  @param chars the chars
  @param begin the begin
  @return the int