Why use JJ?

1. JJ is online: you can learn Java from any computer with Internet access and a browser.
2. JJ is designed for education: if you want to learn Java, or if you want to learn computer programming concepts, JJ is designed for you.
3. Share your webpage: since JJ accounts run Java programs online, is it easy to publish programs for others to try (code not shown).
4. JJ is a web page: nothing to install, no CD, no download; just register and begin learning Java.
5. Extra features for beginners: designed for teaching Java and computer science concepts, syntax coloring and error messages are built for the novice audience.

Why teach Java using JJ?

1. JJ is online: students can submit programs to the instructor without diskettes or paper printouts.
2. JJ runs programs online: when students submit programs, they submit all their *testing* as well as their code.
3. JJ is online: instructors can grade and comment students programs without diskettes or paper printouts.
4. JJ total undo: all programs are stored, use a [Back] button to recall previous compilations.
5. JJ is personalized: as an instructor, you can specify which features are available to your students, you can upload assignments and exercises, you can even limit the number of compilations on an assignment.