Upload a single ZIP file of your Java class files:

• FourthRatings
• a class that implements the interface Recommender
• any other supporting classes you wrote (not the ones we provided)

Including unnecessary files may cause your upload to be rejected because it is too large.

• Do not upload your source code, just the compiled code (files with a .class extension).
• To ensure Java correctly finds your code, directly select the files to include in your ZIP archive rather than simply selecting the entire folder.
• Only ZIP files will be accepted.