Opleiding: Kotlin Programming

Kotlin Intro

The course Kotlin Programming starts with an overview of a number of important features of Kotlin. Attention is paid to the syntax simplifications in the Kotlin language compared to Java. It is also discussed that Kotlin code can be compiled not only to Java, but also to JavaScript or native code.

Language Syntax

Next the language syntax is covered with type inference, mutable and immutable variable declarations, if and when expressions, ranges, loops and iterators.

Classes and Objects

With regard to object oriented programming, class initialization, primary and secondary constructors final and open classes, abstract classes and interfaces are treated. And also attention is paid to data classes in which methods such as equals, toString and hashCode are automatically generated.

Functions

Kotlin also supports functional programming and part of the program of the course are lambda functions, higher order function, passing functions as parameters and returning functions. Also to extension methods, destructuring declarations, nested functions and extracting parameters with the spread operator are discussed.

Collections and Generics

Also covered is the Collection Framework in Kotlin that supports mutable and immutable collections and sequences with lazy evaluation. Parameterized types with generics are also covered. And delegation in Kotlin with lazy and observable properties is explained.

Coroutines

Finally attention is paid to the use of coroutines in Kotlin which can be considered as lightweight threads and which are excellent for asynchronous handling.

Audience Course Kotlin Programming

The course Kotlin Programming is intended for developers who want to learn how Kotlin differentiates itself from Java and who want to learn how to program in Kotlin.

Prerequisites training Kotlin Programming

To participate in this course experience with programming is required. Knowledge of programming in Java is beneficial for the understanding.

Realization course Kotlin Programming

The theory is treated on the basis of presentations. Illustrative demos are used to clarify the concepts. There is ample opportunity to practice and theory and exercises are interchanged. The course times are from 9.30 to 16.30

Certification course Kotlin Programming

Participants receive an official certificate Kotlin Programming after successful completion of the course.

Modules

Module 1 : Kotlin Intro

• What is Kotlin?
• Variables
• Type Inference
• Kotlin Characteristics
• Null Handling
• Safe Call Operator
• Properties
• Custom Accessors
• Kotlin Exceptions
• Kotlin versus Java
• Interoperability
• Run as ECMAScript
• Potential Downsides

Module 2 : Language Syntax

• Packages and Imports
• Default Imports
• Basic Types
• Boxing
• Explicit Conversions
• Characters
• Arrays
• If and When Expressions
• Loops and Iterators
• Ranges
• Jumps and Labels
• Elvis Operator
• !! Operator

Module 3 : Classes and Objects

• Kotlin Class Initialization
• Property Settings
• Inheritance
• Calling Base Constructors
• Secondary Constructors
• Visibility Modifiers
• Abstract Classes and Interfaces
• Nested and Inner Classes
• Data Classes
• Destructuring Declarations
• Sealed Classes
• Kotlin Objects
• Companion Objects

Module 4 : Functions

• Function Scope
• Local Functions
• Extension Functions
• Static Resolvement
• Extension Properties
• Recursive Functions
• Kotlin Tail Recursion
• Higher Order Functions
• Lambda Expressions
• Closures
• Infix Functions
• Operator Functions
• Scope Functions

Module 5 : Collections

• Collection Types
• Immutable Collections
• Mutable Collections
• Collection Hierarchy
• Iterators
• Ranges and Progressions
• Sequences
• Common Operations
• Write Operations
• Transformations
• Filtering
• Plus and Minus
• Grouping

Module 6 : Generics

• Generic Classes
• Generic Functions
• Type Inference
• PECS Principle
• out Keyword
• in Keyword
• Type Projections
• Subtype to Supertype
• Variances
• Covariance
• Contravariance
• Star Projections
• Generic Constraints

Module 7 : Delegation

• Delegation Design Pattern
• by Keyword
• Inheritance Alternative
• Delegated Properties
• Lazy Properties
• Property as Input
• Return Type as Lazy
• Observable Properties
• Standard Delegates
• Properties in Map
• Local Delegated Properties
• Delegate Requirements
• Translation Rules

Module 8 : Interoperability

• Calling Java from Kotlin
• Calling Static Methods
• Using Java Collection
• Reserved Words in Kotlin
• Calling Kotlin in Java
• Calling Kotlin Functions
• Calling Extension Functions
• Using Mutable Collections
• Immutable Collections
• Files with JVM Annotation
• Functions with JVM Annotation
• Calling Kotlin Class
• Calling Kotlin Singleton

Module 9 : Coroutines

• What are Coroutines?
• Concurrency Pattern
• Light-weight Threads
• Coroutine Scope
• launch Method
• Blocking versus non-Blocking
• Structured Concurrency
• Scope Builder
• Global Coroutines
• Cancelation and Timeout
• Coroutine Context
• Channels
• Asynchronous Flow