great!

Nice course which logically ends the series of four. Finally explains why different duke.edu libraries were used as well as BlueJ, which seemed to be strange choise at the beginning. I've finally understood why interfaces and abstract classes are important and how to use it. I decrease the mark to 4 only due to week 3 tests unclarity around hashmap - I've never worked it out how to get to the test results on hashmap size - it was working fine on small samples, but not matching the answers which were in the quiz for the big files which took a lot of time from me and didn't bring satisfaction.

You need to explain Exceptions and interfaces more deeply

Near the end of the course it was very difficult to get programs working exactly as intended. I felt the instructions could have been clearer, especially in Week 3's assignments.

Fantastic course. Thanks to the instructors and students who helped put this coursework together. I've learned a tremendous amount about OOP and software design. Will continue on with the capstone couse to complete the specialization. Thank you.

Awesome course. These professors are great. They are from Duke University

great course recommend it so much

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

Pros:

There are a lot of interesting subjects - the basics of the cryptography (the Caesar cipher, the vigenere cipher), the practical use of the markovs model to generate funny texts, some basics with image filtering and if you dont use course IDE blueJ and duke libraries and found how to do this thing with java core - it will be more profitable.

Cons:

Using custom libraries is very bad for students. We must study java core not some custom libraries.

BlueJ also is a bad choise, even the notepad or the vim are better for understanding the compilation process.

Several tasks and questions are hardly to understand since they are badly formulated.

Also there is no peer reviewed assignments.

Decent. Moved kinda slowly, but it's for beginners, so what did I expect? This is a nice progression of classes for someone with no previous programming experience; if you have previous experience, in another language, you may wish to start with an intermediate course.