To some extent. This falls under API Contents objective:
Product Description Sun Certified Programmer for the Java Platform, Standard Edition 6 wrote:
Given a scenario involving navigating file systems, reading from files, writing to files, or interacting with the user, develop the correct solution using the following classes (sometimes in combination), from java.io: BufferedReader, BufferedWriter, File, FileReader, FileWriter, PrintWriter, and Console.
If you're usure of what you have to study for, check the lower part of this page.