1. COMS W1004 Introduction to Computer Science June 24, 2009

2. Announcements Homework #5 due at the beginning of class Monday –Submit a paper copy of the Theory part –Electronic and paper copy of Programming part If you have topics you want reviewed on Monday, please email me asap

3. Upcoming Office Hours Thursday Jun 25 –Suhas: 5-7pm, 122 Mudd Friday Jun 26 –Chris: 11am-1pm, 608 CEPSR Monday Jun 29 –Swapneel: 11am-1pm, 608 CEPSR Wednesday Jul 1 –Chris: 3-5pm, 608 CEPSR

4. Previously Memory & Cache Control Unit Machine Language & Assembly Language Operating Systems Reading: S&G 5-6

5. Today Computer Networks Internet History Wireless Networking Reading: S&G 7

6. Homework #5 Sample file containing names has been posted (linked from assignment page). Some solutions: –Most friends: Charlie –Friends in common: Charlie + Sally = 2 –Suggest a friend: Charlie = Sally

7. Homework #5 Hints Make sure you get the loadFile and findPerson methods working first Be careful about values that are null (Person objects and Strings): check for null values before trying to use them, and handle those situations accordingly mostFriends and friendsInCommon are much easier than suggestFriend, so work on those first

8. Final Exam Sneak Preview Wednesday, 5:40-8:40pm (note the start time) Big Java chapters 1-7 –Except the brown “testing” and purple “graphics” sections Big Java sections 11.1, 11.4, and 11.5 Anything discussed in class, including example Java code posted on the website –Except for student research presentations

9. Format of the exam 10-15 “concept” questions 5-6 problem solving questions 1-2 “Find the bugs” questions Writing Java code (methods or classes) Understanding Java code

10. Preparing for the exam A list of concepts that you should know is posted on the class website This includes the methods from the Java API that we have seen There is also a collection of practice questions We will review the solutions on Monday