Jan 10, 2020
Actually, before I start this course I had not a good idea about OOP concept such as constructors, HashMap.now I have fair confidence about that. thank you duke university making such an arrangement.
Mar 30, 2017
Good and practical training approach to solve real worlds problems. Assignments and quizzes are quite challenging and interesting. Greatly motivates us towards programming and problem solving skills.
von João T•
Mar 15, 2019
This course optimizes your basics skills concerning programming with java and take you to the nest level. This course increases the workload, practicing and debugging your code.
New concepts are introduced like, Arrays, HashMaps, and object-oriented-programming.
Once more, the professors bring the extra quality and professionalism to this subject.
von Bealfan H•
Aug 06, 2018
I found some of the questions quite challenging as opposed to the programming concepts. The questions specifically in the 4th week Quiz need to be reworded as they are a confusing bunch. But thanks for making a great content and giving me the right amount of information and domain knowledge to understand some important Java concepts.
von Urmi L•
Aug 20, 2018
The content of the course was great! The instructional videos taught a lot of concepts in detail, but some more, optional, assignments could have enhanced the course by providing extra practice for the concepts. Overall, I felt like I learned a lot in this course and would like to take the next one!
von Hanqi Z•
Apr 25, 2019
Useful course. Helped me gain a solid understanding of OO programming in Java, though I feel that the part where HashSet came up was too rushed (might want to reassure students that they will learn about why HashSet is faster when they learn about data structure in the future)
von Jose U•
May 18, 2017
I found this course particularly tough. I had to take it slow because of work and family and rather than 4 weeks it took me 4 months. But in the end I felt I got the intended knowledge.
Some sections are hard without knowledgeable mentors in the discussion forums.
Jul 20, 2016
Thank you for the course. The professors explain things with great enthusiasm and artistry. The main topic of the course - breaking ciphers is very interesting for me. Because of this interest I was completely involved into the course.
Thank you again!
von Bryan Y•
Dec 13, 2016
The amount of learning in this module is huge! If you have never worked with HashMaps and don't know what this is, you may spend quite a bit of time trying to understand. That time will probably be spent reading material external to the course.
von Pawel D•
Dec 13, 2015
The course is ok, but some lectures seems to be too slow paced, while the programming assignments tend to be difficult for a beginner programmer, since some issues are not covered in the lectures.
von Kipp M•
Jan 22, 2019
Very difficult material in week 2. Took a lot of effort to get through, but was worth it. I am continuing to learn about Java and writing more fluid programs in this specialization.
von Difan G•
Jan 06, 2020
Great course with clear level of difficulties laid out for each sub courses. But the course content jumped between cryptography and other materials making things hard to remember.
von Goodwill T K•
Dec 30, 2019
The assignments were not clear and I didn't know if i should go back and use my Caesar code to get some of the answers for the assignment. it would be nice to hint a bit more
von María V D•
May 08, 2018
Maybe this course for me are the most difficult, but the teachers, the teaching method and the spirit of Coursera in the mate´s class are the best.
von Denis G•
Mar 22, 2018
6th question in final quiz is really hard for non native english speakers. Please avoid questions with multiple selection and with lots of text.
von Joselito P S J•
Nov 26, 2018
Some concepts used in Week 2 were introduced/ explained in more detail in Week 3 so I struggled in Week 2 but Week 3 was a breeze.
von Chongjun H•
Sep 29, 2017
Useful and helpful, a millstone in the specialization path, but not so preferable if you only enroll this single course.
von Dieter R•
Nov 25, 2018
The final quiz has 3 difficult questions for which I could not find a good answer. Luckily my guesses were good enough.
von Zakir S•
Jan 23, 2020
Good course but not much help is available to complete assignments and hints are not very helpful when taking quizzes
von Cyan C•
Oct 09, 2017
Hope the mentor can be more responsive on forum, as the quiz is getting tougher and need more help on it
von Shridhar S•
Aug 09, 2017
It would be helpful if explanations of the problems in the quiz were made available after passing them.
von Ashutosh D•
May 23, 2017
A nice course on cryptography. Learned many new data structures like HashMap, HashSet and ArrayList.
von Nuggu S V R•
Dec 25, 2015
Great course. Learning Java Data Structures and Cipher encryption was fun.
Good material and problems
von Orlando C•
Feb 03, 2018
It is a good start for Java programming. Is very much practice oriented and the videos are clear.
von Masaru N•
Nov 11, 2017
One of the most **practical** Java programming courses that I've ever taken.
Thank you so much.
von Devul N•
Aug 19, 2017
A pretty challenging and engaging course which taught me a lot of new concepts of Java!
von Nguyen V H•
Jun 21, 2017
This course is useful, the teachers have step by step directions to easy understand.