i submit this serials, and i like the courses from Duke very much. Easy to understand, and the challenge wouldn't be too simple or too difficult. I recommend it.

Learn a lot of things, most of them I had already knew it, especially chapter 4 but I have to admin that it was a good java review and interesting .Thank you

I loved this course, all the videos and assignments are perfectly directed. now I really have a deeper understanding about Interface. Thank you so much.

Very good course. I hope there can be automated grader or feedbacks on codes or hints on quizzes to make the programming assignments more manageable.

It's a very good course that solidifies your understanding. It gets challenging in week 3 and has to be done with great accuracy and attention.

This course has been fantastic. A step up in difficulty, week 3 in particular was grueling. I learned so many useful things in this course

The topics are neatly organized and the exercises are challenging. I would like to thank all the instructors for this great course.

Easy to follow in most cases, great coding exercises and outstanding organization of the contents delivered. Highly recommended.

Good course! The programming exercises are will planned to reinforce the concepts learnt in the video lectures.

Not as challenging as the previous courses but still a very good course to continue learning Java. Thank you!.

As the previous 3 Courses, very well-thought off and practical - this is exactly what I wanted from a course.

The practice examples and content are top notch. Learning about markov models was particularly interesting.

Combining the knowledge of course 2+3 and adding a glimpse into object oriented programming - I enjoyed it!

Excellent course with outstanding material to practice exercises and learn good stuff. Highly Recommended!

Perfectly structured and explained, and, as always, provides really interesting programming assignments!

Excellent course and well integrated with the other courses in the Specialization of which it is part.

Very Informative and course is well explained. Assignments are bit challenging but they worth it.

Great course. Builds nicely on everything that we have done so far. Very interesting material!

good and Engaging course require good understanding of course material to solve the assignment.

Thank you everyone for your support and for the time spent to offer a quality teaching!

Amazing course! Perfect for those who are serious about learning programming and Java!

Excellent course again. Assignments were a little lengthy but fantastic work overall.

The teacher is very comprehensive and very serious.. I have learned a lot, thanks.

Fun course with some long lectures. I found the material to be quite challenging.

Great course and great professors. Very interesting knowledge base to learn from.