Class Exercises Class exercises will appear here as they become available. Class Exercises 1 (code queries); Class Exercises 2 (refactoring); Class Exercises 3 (mechanising refactoring); (No Exercises 4); Class Exercises 5 (open classes); Class Exercises 6 (pointcuts and advice); Class Exercises 7 (joinpoints); (No Exercises 8); Class Exercises 9 (around); Class Exercises 10 (thread safety); (No Exercises 11); Class Exercises 12 (aspect instantiation);