public void printCourses(Avatar a) { List<Course> fc = a.getFinishedCourses(); List<Course> uc = a.getUnfinishedCourses(); System.out.println("Finished courses: "); for (int i = 0; i < fc.size(); i++) { System.out.println(fc.get(i)); } System.out.println("Unfinished courses: "); for (int j = 0; j < uc.size(); j++) { System.out.println(uc.get(j)); } }