关于此课程： This course will build on the skills you learn in Java Programming: Solving Problems with Software. You will continue to expand your programming skill set to read and manipulate data with more complex structure. You will also write programs with more complex structure. By the end of this course, you will be able to: 1. Read and write data from/to files; 2. Solve problems involving data files; 3. Perform quantitative analyses of data (e.g., finding maximums, minimums, averages); 4. Store and manipulate data in an array or ArrayList; 5. Combine multiple classes to solve larger problems; 6. Use iterables and collections (including maps) in Java.
此课程适用人群： This course is for anyone who has taken the first two courses in the Java Programming and Software Engineering Fundamentals Specialization, “Programming Foundations with JavaScript, HTML and CSS” and “Java Programming: Solving Problems with Software.” To succeed in this course, before starting you should have a good understanding of the following: variables, conditionals, for and while loops, methods, Strings, and the edu.duke custom libraries.
制作方： Duke University
教学方： Andrew D. Hilton, Assistant Professor of the Practice
Electrical and Computer Engineering
教学方： Robert Duvall, Lecturer
Computer Science
教学方： Owen Astrachan, Professor of the Practice
Computer Science
教学方： Susan H. Rodger, Professor of the Practice
Computer Science
| 基本信息 | 课程 2（共 4 门，Object Oriented Programming in Java Specialization ） |
| 级别 | 初级 |
| 承诺学习时间 | 4周的学习时间 每周需花费3-5小时 |
| 语言 | English, 字幕： Korean |
| 如何通过 | 通过所有计分作业以完成课程。 |
| 用户评分 |
授课大纲
第 1 周
Welcome
Welcome to “Java Programming: Arrays, Lists, and Structured Data”! We are excited that you are starting our course to learn how to write programs in Java, one of the most popular programming languages in the world. In this introductory module, you will hear an overview of this course and be introduced to the supporting resources available.
1 个视频, 2 个阅读材料
- Leyendo: Programming Resources
- Leyendo: Feedback surveys
Cryptography: Keeping Information Secret
In this module, you will learn about the basics of cryptography, the science of keeping information private and secure. You will learn about simpler cryptographic systems, which were used from the Roman Empire through the early 1900s. You will learn how to implement these ciphers, as well as how to break them. To solve these problems, you will work more with processing Strings, but also learn about arrays—a way to store an indexable sequence of elements. You will be able to: (1) combine Strings using concatenation; (2) build Strings within a Java program using StringBuilder; (3) use arrays to store and manipulate collections of data; (4) refactor your programs for improved organization using object-oriented principles; (5) and practice effective algorithm design.
21 个视频, 5 个阅读材料, 3 个练习测验
- Leyendo: Module Learning Outcomes / Resources
- 视频: Introduction
- 视频: Creating and Manipulating Strings
- 视频: Counting Loops
- 视频: Character Class
- 视频: Developing an Algorithm
- 视频: Translating into Code
- 视频: Testing and Debugging
- 视频: Summary
- Leyendo: Programming Exercise: Implementing the Caesar Cipher
- Cuestionario de práctica: Implementing the Caesar Cipher
- 视频: Introduction
- 视频: Arrays
- 视频: Random Numbers and Arrays
- 视频: Counting with Arrays
- 视频: Developing an Algorithm
- 视频: Summary
- Leyendo: Programming Exercise: Breaking the Caesar Cipher
- Cuestionario de práctica: Breaking the Caesar Cipher
- 视频: Introduction
- 视频: Rewriting with Encapsulation
- 视频: Fields
- 视频: Visibility
- 视频: Constructors
- 视频: Summary
- Leyendo: Programming Exercise: Object Oriented Caesar Cipher
- Cuestionario de práctica: Object Oriented Caesar Cipher
- Leyendo: End of Module Survey
已评分: Cryptography
第 2 周
GladLibs: Stories from Templates
After completing this module, you will be able (1) to program a word frequency counter to analyze any input text file, (2) to select and substitute words from a list into a document template using both ArrayList and HashMap, (3) to create new lists to use in templates, (4) to recognize brittle code, and (5) to improve code with flexible, object-oriented design. You will gain these skills in the framework of developing a randomly generated story that we call GladLibs. You may discover that bald lions change peoples’ lives, or that fluffy dinosaurs get things done in a jiffy. We hope you have fun developing your Java skills this week!
13 个视频, 5 个阅读材料, 2 个练习测验
- Leyendo: Module Learning Outcomes / Resources
- 视频: High-level Design Concepts
- 视频: ArrayList
- 视频: ArrayList for Unique Words
- 视频: ArrayList Advantages and Issues
- 视频: Summary
- Leyendo: Programming Exercise: Telling a Random Story
- Cuestionario de práctica: Telling a Random Story
- 视频: Introduction
- 视频: Brittle Code
- 视频: Adding New Labels
- Leyendo: Programming Exercise: Using GladLibs
- 视频: HashMap
- 视频: HashMap for Unique Words
- 视频: HashMap for Flexible Design
- 视频: Summary
- Leyendo: Programming Exercise: Improving GladLibs
- Cuestionario de práctica: Using and Improving GladLibs
- Leyendo: End of Module Survey
已评分: GladLibs
第 3 周
Web Server Logs: From Logs to Visits
In this module, you will learn about how web server logs store information about visitors to a website, and you will write programs to access information like user IP address, date and time of access, and more. Using Java programs you write in this module, you will be able (1) to read information from a web server log, (2) to count the number of unique visitors to your website, and (3) to count the number of times each visitor uses your website.
15 个视频, 5 个阅读材料, 3 个练习测验
- Leyendo: Module Learning Outcomes / Resources
- 视频: Understanding Log Files
- 视频: LogEntry Class with toString
- 视频: Parsing Log Files
- 视频: Summary
- Leyendo: Programming Exercise: Reading Log Files
- Cuestionario de práctica: Reading Log Files
- 视频: Introduction
- 视频: Developing an Algorithm
- 视频: Translating to Code
- 视频: Equality
- 视频: Summary
- Leyendo: Programming Exercise: Finding Unique IP Addresses
- Cuestionario de práctica: Finding Unique IP Addresses
- 视频: Introduction
- 视频: Developing an Algorithm
- 视频: Translating to Code
- 视频: HashMap for Unique IPs
- 视频: Summary
- Leyendo: Programming Exercise: Counting Website Visits
- Cuestionario de práctica: Counting Website Visits
- Leyendo: End of Module Survey
已评分: Web Server Logs
第 4 周
MiniProject: Vigenère Cipher
In this module, you will develop a program to break the Vigenère Cipher, a more complex version of the Caesar Cipher. You will improve your program in three stages: first decrypting messages where you know the language and key length, then adding the capability to handle messages with unknown key length, then extending the program to handle messages in a range of possible languages. Through this project, you will be able (1) to effectively use HashSet and HashMap, (2) to expand an algorithm from solving a simpler problem to handle broader, more complex problems, and (3) to design and modify program code involving a more complex collection of classes, methods, and data.
4 个视频, 6 个阅读材料, 2 个练习测验
- Leyendo: Module Resources
- 视频: Known Language and Key Length
- Leyendo: Programming Exercise: Known Language and Key Length
- Cuestionario de práctica: Known Language and Key Length
- 视频: Unknown Key Length
- Leyendo: Programming Exercise: Unknown Key Length
- Cuestionario de práctica: Unknown Key Length
- 视频: Unknown Language
- Leyendo: Programming Exercise: Unknown Language, Unknown Key Length
- Leyendo: Extend Your Program
- Leyendo: End of Module Survey
已评分: Breaking the Vigenère Cipher
常见问题解答
运作方式
Trabajo del curso
Cada curso es como un libro de texto interactivo, con videos pregrabados, cuestionarios y proyectos.
Ayuda de tus compañeros
Conéctate con miles de estudiantes y debate ideas y materiales del curso, y obtén ayuda para dominar los conceptos.
Certificados
Obtén reconocimiento oficial por tu trabajo y comparte tu éxito con amigos, compañeros y empleadores.
制作方
Duke University
Duke University has about 13,000 undergraduate and graduate students and a world-class faculty helping to expand the frontiers of knowledge. The university has a strong commitment to applying knowledge in service to society, both near its North Carolina campus and around the world.
价格
| 购买课程 | |
|---|---|
| 访问课程材料 | 可用 |
| 访问评分的材料 | 可用 |
| 收到最终成绩 | 可用 |
| 获得可共享的课程证书 | 可用 |
评分和审阅
This course taught me many useful data manipulation skills in java.
As someone who had slight knowledge of Java and who is looking to study computer science, this course filled in the gap that IB Computer Science 1st Year couldn't do - I actually got to code and apply concepts like writing private vs public methods or using getters or for loops. I also had the luxury of having a free summer to complete this and with days of work ranging from 3-6 hours, I managed to finish the course in 26 days. I believe it relies a bit too much on its previous courses at times and the time needed to complete assignments is very off but this is a great way to actually see a project through and push yourself. Thank you Duke!
it is an excellent course, with very good explanation, and very interesting exercises.
BH
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.