* @throws IOException
*/
public boolean addStock(String ticker, String companyName, int isEnabled)
throws IOException, InvalidStockException {
if(GameUtil.isEmpty(ticker) || GameUtil.isEmpty(companyName))
throw new InvalidStockException("Both ticker and company name are required to add stock");
EnabledStatusEnum.forValue(isEnabled);
if (stockExistInSystem(ticker)) {
return false;