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Java 17 Essential Training: Objects and APIs

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Learn the essentials of functional programming with objects and APIs in the most recent long-term support release, Java 17.

Syllabus

Introduction

Java objects and APIs
What you should know

1. Inheritance

Inheritance between classes
Constructors in inheritance
Overriding and overloading inherited methods
Chain of inheritance
Limiting access in inheritance
Sealed classes
Challenge: Cake! Cake! Cake!
Solution: Cake! Cake! Cake!

2. Polymorphism

Polymorphism with objects
Object typecasting
instanceof operator

3. Abstraction

Abstract classes and methods
Inheriting from abstract classes
Creating objects with abstract types

4. Interfaces

Creating an interface
Implementing interfaces
Instantiating objects with interface types
Default and static methods

5. Data Structures

Collections framework
Sets
Lists
Queues
Maps
Iterators
Enhanced for loops
forEach() and lambdas
Challenge: Gradebook
Solution: Gradebook

6. Functional Programming

Functional interfaces
Streams
Common stream operations

7. Exception Handling

Try and catch blocks
Stack trace and exception message
Checked vs. unchecked exceptions
Handling multiple exceptions
Finally block
Try with resources
Throwing exceptions
Rethrowing exceptions

Conclusion

Next steps

Taught by

Angie Jones

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4.8 rating at LinkedIn Learning based on 483 ratings

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