Computer Programming
754 learners
Clean Code with Multiple Classes
Explore principles for maintaining clean code with multiple classes. Learn about class collaboration, interfacing, abstract classes, managing dependencies, practicing polymorphism, and handling exceptions across classes.
Java
5 lessons
13 practices
2 hours
Collaboration and Code Review
Lessons and practices
Refactor Responsibilities for Bonus Calculation
Simplify Chained Method Calls
Eliminate the Middle Man Code Smell
Interfaces for Flexible Payment Solutions
Refactor Payment Processing with Interfaces
Harnessing Abstract Classes for Flexibility
Decoupling Car and Engine Classes
Decoupling for Flexible Notifications
Decouple Using the Factory Pattern
Polymorphism in Animal Feeding Task
Mastering Polymorphism with Animal Behaviors
Refactor Exception Handling in Java
Refactor Exception Handling with Unchecked Exceptions
Meet Cosmo:
The smartest AI guide in the universe
Our built-in AI guide and tutor, Cosmo, prompts you with challenges that are built just for you and unblocks you when you get stuck.

Join the 1M+ learners on CodeSignal
Be a part of our community of 1M+ users who develop and demonstrate their skills on CodeSignal