Object-Oriented Design from Coursera

This course takes Java beginners to the next level by covering object-oriented analysis and design. You will discover how to create modular, flexible, and reusable software, by applying object-oriented design principles and guidelines. And, you will be able to communicate these designs in a visual notation known as Unified Modelling Language (UML).

You will be challenged in the Capstone Project to apply your knowledge of object-oriented design by evolving and documenting the Java codebase for an Android application with corresponding UML documentation.

After completing this course, you will be able to:

• Apply the Class Responsibility Collaborator (CRC) technique to analyze and design the object-oriented model for a problem.

• Explain and apply object-oriented modeling principles and their purpose (e.g., abstraction, encapsulation, decomposition, generalization).

• Explain and apply different types of inheritance

• Explain the difference between association, aggregation, and composition dependencies.

• Express object-oriented models as Unified Modeling Language (UML) class diagrams.

• Translate between UML class diagrams and equivalent Java code.

• Apply design guidelines for modularity, separation of concerns, information hiding, and conceptual integrity to create a flexible, reusable, maintainable design.

• Explain the tradeoff between cohesion and coupling.

What's inside

Syllabus

Object-Oriented Analysis and Design

Good software design begins before coding. After establishing the initial software requirements, design practices involve two main activities: conceptual design and technical design. In this module, you will realize the importance of design and object-oriented thinking, and learn how to design software using techniques like CRC cards.

Object-Oriented Modeling

Best software design practices have evolved alongside programming languages. Today, all developers should be familiar with abstraction, encapsulation, decomposition, and generalization, which are fundamental principles in object-oriented design. You will learn all of these principles and how they are expressed in Java and communicated visually in Unified Modelling Language.

Design Principles

Additional design principles will help you to create code that is flexible, reusable, and maintainable. In this module you will learn about coupling and cohesion, separation of concerns, information hiding, and conceptual integrity. You will also learn to avoid common pitfalls with inheritance, and ways to express software behavior in UML.

Capstone Challenge

In the previous modules you were introduced to object-oriented analysis and design, object-oriented modeling, and design principles. To cement your understanding of this material, you created a UML class diagram from an example Android code base, and used your understanding of the code base to make sequence and state diagrams to model its behavior. Now, in the final module of the course, given a description of new functionality and an updated UML class diagram, you will implement the updated design into the Android code base. After completing this development task, you will be ready to complete the final exam.

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Suitable for continuing Java learners who have an interest in object-oriented design

Taught by Kenny Wong, who is recognized for their expertise in object-oriented programming and design

Covers a range of topics relevant to object-oriented design, such as modeling, principles, and patterns

Includes a Capstone Project that provides hands-on experience in applying the concepts learned

Offers a strong foundation in object-oriented design and modeling

Requires learners to have a basic understanding of Java

Reviews summary

Robust software engineering

learners say this course elevates software design and programming skills, particularly in Java and through the application of object-oriented analysis and design principles. According to students, a strength of the course is the capstone project, which involves evolving and documenting a Java codebase for an Android application, accompanied by comprehensive UML documentation. Other key takeaways include, development of advanced object-oriented design skills and proficiency in communicating complex designs through the use of Unified Modeling Language (UML).

This course also covers the crucial tradeoff between cohesion and coupling in software design. Cohesion refers to the degree to which a module or class is focused on a single responsibility. Coupling refers to the degree to which a module or class depends on other modules or classes. Finding the right balance between cohesion and coupling is essential for creating high-quality, maintainable software.

"Insight into the crucial tradeoff between cohesion and coupling in software design."

The course's capstone project challenges learners to evolve and document a Java codebase for an Android application, accompanied by comprehensive UML documentation.

"Capstone Project Challenge: Application of acquired knowledge through a challenging Capstone Project involving the evolution and documentation of a Java codebase for an Android application, accompanied by comprehensive UML documentation."

"practical experience in Android which is useful to apply theoretical concept in real programming"

In addition to OO concepts, this course also covers Unified Modeling Language (UML), a standard visual notation for software modeling. Students will learn how to use UML to communicate complex designs. This is a valuable skill for software engineers, as it allows them to create visual representations of their designs that can be easily understood by other team members.

"Unified Modeling Language (UML): Proficiency in communicating complex designs through the use of Unified Modeling Language (UML), a standard visual notation for software modeling."

This course provides a deep dive into object-oriented (OO) analysis and design principles, with a focus on Java programming. Students will learn how to create modular, flexible, and reusable software through the application of OO design principles and guidelines. They will also acquire the skills to analyze and design sophisticated software systems.

"Advanced Object-Oriented Design: Mastery of creating modular, flexible, and reusable software through the application of object-oriented design principles and guidelines."

"Acquisition of skills to analyze and design sophisticated software systems."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Object-Oriented Design with these activities:

Attend a study group

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Enhance your learning by discussing course material with your peers.

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Identify or create a study group
Meet regularly to discuss course material

Participate in a coding competition

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Develop your skills under pressure by participating in a coding competition.

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Find an appropriate competition
Prepare for the competition
Participate in the competition

Read a reference book

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Reinforce your understanding of the principles of object-oriented programming and design by reading a foundational text.

View The Unified Modeling Language Reference Manual on Amazon

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Identify key concepts
Review examples
Create your own UML diagrams

Five other activities

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Solve object-oriented design problems

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Develop your problem-solving skills by practicing object-oriented design problems.

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Find a set of practice problems
Work through the problems
Check your solutions

Build a simple Java application

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Apply the design principles you learn in this course to a practical project.

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Design and plan your application
Implement your design in Java
Test and debug your application

Follow tutorials on advanced Java topics

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Expand your knowledge of Java and object-oriented programming by following tutorials.

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Identify areas where you need additional knowledge
Find relevant tutorials
Complete the tutorials

Write a blog post about object-oriented design

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Deepen your understanding of object-oriented design by explaining it to others in a blog post.

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Choose a specific topic
Research and gather information
Write your blog post
Share your blog post

Create a cheat sheet for object-oriented design

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Reinforce your understanding of object-oriented design by creating a quick reference for yourself.

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Gather relevant information
Organize the information in a logical way
Create a visual and concise cheat sheet

Career center

Learners who complete Object-Oriented Design will develop knowledge and skills that may be useful to these careers:

Software Architect

Software Architects design and build the structure and overall architecture of software systems. This course teaches the foundational principles that most modern software and programming languages are built upon, making it a valuable resource for an aspiring or practicing Software Architect.

See salaries and explore the career path for Software Architect

Software Developer

Software Developers design, develop, and test software and applications. As most software today is built on object-oriented languages, this course will teach you the principles of OOP. This forms a solid foundation for your career as a Software Developer, preparing you to work on the development of new software.

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Software Engineer

Software Engineers design, develop, maintain, and test software solutions. To be successful in this role, you will need to understand the principles of OOP. This course teaches you these foundational principles and how to apply them to software engineering.

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Systems Analyst

Systems Analysts study an organization's current business processes and solve problems by developing software solutions. This course will equip you with the skills necessary for designing and developing object-oriented solutions to meet the needs of the business.

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Technical Architect

Technical Architects design and implement technology solutions for organizations. This course can help you develop the skills to design software solutions that are modular, flexible, and reusable. You will also learn how to apply design guidelines for maintainability and conceptual integrity, which are essential for Technical Architects.

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Web Developer

Web Developers design and develop websites and web applications. This course can be a valuable foundation for your career as a Web Developer, which typically involves using object-oriented programming languages to build dynamic web applications.

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Mobile Application Developer

Mobile Application Developers design, develop, and maintain software applications for mobile devices. If you want to break into this field, this course can help teach you the principles of object-oriented programming. You will also learn how to design and develop modular, flexible, and reusable software solutions.

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Data Analyst

Data Analysts collect, clean, and analyze data to identify trends and patterns. This course can teach you how to use object-oriented programming principles to design and develop software solutions for data analysis.

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Business Analyst

Business Analysts work with stakeholders to define, gather, and document the business requirements for software solutions. To be successful in this role, you will need to be able to understand and communicate object-oriented design concepts. This course can act as a springboard in your career as a Business Analyst by teaching you the principles of object-oriented design, which are essential for understanding and documenting software requirements.

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Information Security Analyst

Information Security Analysts design, implement, and maintain security measures to protect an organization's information systems. This course may be useful in this role, as it can teach you how to design and develop object-oriented solutions for information security.

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Database Administrator

Database Administrators design, implement, and maintain databases. This course may be useful in this role, as it can teach you how to design and develop object-oriented solutions for data management.

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Network Administrator

Network Administrators design, implement, and maintain computer networks. This course may be useful in this role, as it can teach you how to design and develop object-oriented solutions for network management.

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Computer Support Specialist

Computer Support Specialists provide technical support to users of computer systems. This course may be useful in this role, as it can teach you how to troubleshoot and resolve technical issues related to object-oriented software.

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Quality Assurance Analyst

Quality Assurance Analysts test and evaluate software to ensure that it meets the requirements and standards. This course may be useful in this role, as it can teach you how to design and develop object-oriented software that meets quality standards.

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Project Manager

Project Managers plan, execute, and close projects. This course may be useful in this role, as it can teach you how to manage projects related to object-oriented software development.

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