This is no surprise to java junkies, but coffee is big business. McDonald's (NYSE: MCD) and Green Mountain Coffee Roasters (Nasdaq: GMCR) each rake in more than $1 billion in annual revenue from coffee alone. Dunkin' Donuts (Nasdaq: DNKN) can't reach those figures, but is known for its java and says it's No. 1 in iced-coffee sales.

Each of these companies no doubt lifted a mug in celebration of Starbucks' (Nasdaq: SBUX) recent decision to raise its prices.

The king of caffeine does more than $10 billion in annual sales. In light of the still-struggling global economy and penny-pinching consumers, could Starbucks' price hikes really cause it to lose market share to competitors?

Starbucks isn't the only retailer able to prosper in difficult times. Check out "The Death of Wal-Mart: The Real Cash Kings Changing the Face of Retail" to see two stocks to own in this struggling global economy.