This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Yes, using labels referred to loops is legal in Java. You may hence think it's not the usual coding style. However, for labels that are used in nested loops scenario, it may give you a better idea about the true value of using labels. It gives an alternative to manipulating a couple of indices in a program (which make code less readable).