How to read applied promotions codes

The below snippet will give you to read the promotions codes which are applied to order number,

String orderId = "978593958";
OrderKey orderKey = new OrderKey(new Long(orderId));
PromotionArgumentSessionBeanPersistenceManager promoManager = new PromotionArgumentSessionBeanPersistenceManager();
PromotionArgument promArg = promoManager.load(orderKey);
Iterator prmoExeRecds = promArg.getPromotionExecutionRecords();
while(prmoExeRecds.hasNext()) {
PromotionExecutionRecord promotionExeecutionRecord = (PromotionExecutionRecord) prmoExeRecds.next();
Promotion promotion = promotionExeecutionRecord.getPromotion();
System.out.println("Name: " + promotion.getName());
System.out.println("Admin description: " + promotion.getDescription(commandContext.getLocale(), com.ibm.commerce.marketing.promotion.Description.SHOPPER_SHORT_DESC));
}