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.
Good question! java.lang is a special package. It is automatically imported whether the class specifies it or not. Other common classes like Integer and String are located in that package as well. That's why you can just write Integer.parseInt("111") without having to import anything.