Join Barron Stone for an in-depth discussion in this video Interfaces, part of Programming Foundations: Object-Oriented Design.
- Interfaces are another common form of abstraction…that's supported by many object-oriented languages.…An interface is a programming structure…that declares a set of methods for a class to implement,…but the interface itself doesn't contain any functionality.…There's no implemented code or behavior.…It's just a collection of method signatures…to specify a service.…For example, in Java an interface…would be written like this,…using the word interface instead of class.…This interface is named Moveable…and it declares one method called move.…
But that method doesn't have a body.…Again, you're not allowed to put any functionality…inside an interface.…When we defined a new class…and choose to implement a specific interface,…it's like signing a contract,…promising that the new class we're defining…will implement all of the methods in that interface.…But, we're free to implement the inner workings…of those methods however we want as long as the method…names, inputs, and outputs match the interface.…For example, if we define an Asteroid class that implements…
Released
11/27/2018- Object-oriented basics: objects, classes, and more
- Encapsulation
- Inheritance
- Defining requirements
- Identifying use cases, actors, and scenarios
- Domain modeling
- Identifying class responsibilities and relationships
- Creating class diagrams
- Using abstract classes
- Working with inheritance
- Developing software with object-oriented design principles
Skill Level Beginner
Duration
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Introduction
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What you should know1m 33s
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1. Object-Oriented Fundamentals
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Object-oriented thinking4m 23s
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Objects5m 1s
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Classes4m 38s
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Abstraction2m 32s
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Encapsulation3m 38s
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Inheritance4m
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Polymorphism4m 9s
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2. Requirements
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Defining requirements5m 9s
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FURPS+ requirements2m 37s
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3. Use Cases and User Stories
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Use cases4m 57s
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Identifying the actors3m 39s
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Identifying the scenarios4m 18s
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Diagramming use cases3m 38s
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User stories3m 53s
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Challenge: Jukebox use cases1m 11s
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Solution: Jukebox use cases2m 44s
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4. Domain Modeling
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Identifying the objects3m 52s
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CRC cards2m 58s
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5. Class Diagrams
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Instantiating classes3m 39s
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6. Inheritance and Composition
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Using inheritance2m 44s
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Interfaces4m 15s
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Aggregation2m 3s
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Composition1m 45s
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7. Software Development
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Software testing3m 38s
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Design patterns3m 48s
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Conclusion
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Next steps50s
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Video: Interfaces