Home>Courses>Mastering Kotlin Essentials

Beginner

12h

Certificate of Completion

Mastering Kotlin Essentials

Delve into Kotlin essentials for cross-platform mobile, web, and back-end development. Gain insights into syntax, OOP, collections, and generics. Apply skills to build robust applications including a workout manager.

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This course includes

121 Lessons

1 Project

2 Assessments

317 Playgrounds

28 Quizzes

Course Overview

What You'll Learn

Course Content

Recommendations

Course Overview

Cross-platform development is an attractive goal. Java enabled developers to write code that runs everywhere. However, it mostly targeted back-end development. Kotlin is a cross-platform programming language that targets mobile (Android and iOS), web, and back-end development. It provides all of these features with a familiar VM-based runtime and modern language features. In this course, you’ll learn the syntactical elements of Kotlin for working with variables, conditional statements, and loops. You’ll th...Show More

Cross-platform development is an attractive goal. Java enabled developers to write code that runs everywhere. However, it mostly...Show More

What You'll Learn

A solid understanding of fundamental programming constructs in Kotlin

Working knowledge of object-oriented programming in Kotlin

The ability to write robust programs in Kotlin

Familiarity with advanced Kotlin programming constructs, such as operator overloading and type systems

A solid understanding of fundamental programming constructs in Kotlin

Course Content

Getting Started

5 Lessons

Get familiar with Kotlin's basics, from syntax and "Hello, World" to personalized greetings.

Course Overview

Introduction to Kotlin

First Program in Kotlin

Quiz: Getting Started

Exercise: Printing a Greeting Message

Kotlin Fundamentals

7 Lessons

Walk through Kotlin's essential concepts: variables, numeric types, conversions, Booleans, and strings.

Introduction to Variables, Types, and Literals

Integers and Floating-Point Numbers

Numeric Conversions and Operations

Booleans

Characters and Strings

Quiz: Kotlin Fundamentals

Exercise: Numeric Operations

Conditional Statements

7 Lessons

Master the steps to understand and apply Kotlin's conditional statements and type safety.

The if Statement

The when Statement

The is and !is Operators

Explicit vs. Smart Casting

The while and do-while Statements

Quiz: Conditional Statements

Exercise: Repeating Conditional Operations

Functions

6 Lessons

Break down the steps to define, use, and format functions in Kotlin for modular, readable, and flexible code.

Introduction to Functions

Single-Expression Functions vs. Functions on All Levels

Named Parameter and Default Arguments

Function Overloading and Function Formatting

Quiz: Functions

Exercise: Printing Personal Information

The Power of the for Loop

5 Lessons

Solve problems in Kotlin iteration with for loops, control statements, and range operations.

Introduction to the for Loop

Range and Control Statements

Modernizing Iteration Practices

Quiz: The Power of the for Loop

Exercise: Practicing Range Operations

Nullability

6 Lessons

Focus on Kotlin's effective nullability handling, enhancing code safety and reliability.

Introduction to Nullability

Safe Calls and the Not-Null Assertion

Smart-Casting and the Elvis Operator

Extensions on Nullable Types and lateinit Property

Quiz: Nullability

Exercise: Processing User Information

Classes

6 Lessons

Piece together the parts of Kotlin classes, properties, constructors, and custom methods.

Classes and Member Functions

Class Properties and Accessors

Constructors

Data Classes and Inner Classes

Quiz: Classes

Exercise: Implementing the Product Class

Inheritance

7 Lessons

Learn how to use inheritance, abstract classes, interfaces, and visibility modifiers in Kotlin.

Introduction to Inheritance

Superclass Non-Empty Constructors and Methods

Exercise: Simulating a Device Controls Hierarchy

Data Classes

8 Lessons

Discover the logic behind Kotlin data classes for equality, string representation, copying, and limitations.

Data Classes and the Any Class

String Representation and Objects Equality

Hash Code and Copying Objects

Destructing

Data Class Limitations

Data Classes vs. Tuples

Quiz: Data Classes

Exercise: Comparing Objects of Data Class

10.

Objects

5 Lessons

Go hands-on with Kotlin's objects, companion objects, data objects, and a pizza factory exercise.

Objects Expressions and Declarations

The Companion Objects

The Data Objects and Constants

Quiz: Objects

Exercise: Simulating a Pizza Factory

Mid Course Assessment

Assessment

12.

Exceptions

5 Lessons

Break down complex ideas of handling, types, and hierarchy of exceptions in Kotlin.

Handling Exceptions

The try, catch, and finally Blocks

Exception Types and Their Hierarchy

Quiz: Exceptions

Exercise: Handling Exceptions

13.

Enum Classes

4 Lessons

Take a closer look at defining and utilizing enum classes in Kotlin through practical examples.

Introduction to Enum Classes

Advanced Usage of Enum Classes

Quiz: Enum Classes

Exercise: Days of the Week

14.

Sealed Classes and Interfaces

5 Lessons

Investigate sealed classes and interfaces to create controlled, flexible type hierarchies in Kotlin.

Introduction to Sealed Classes and Interfaces

The Sealed Classes and when Expression

Use Cases

Quiz: Sealed Classes and Interfaces

Exercise: Mathematical Operations

15.

Annotation Classes

4 Lessons

Piece together the parts of annotation classes, meta-annotations, and custom code generation exercises.

Introduction to Annotation Classes

Meta Annotations

Quiz: Annotation Classes

Exercise: Code Generation

16.

Extensions

7 Lessons

Learn how to use Kotlin extensions to enhance classes without modifying original code.

Introduction to Extensions

Extension Functions and Properties

Extension Functions vs. Member Functions

Extension Functions and Object Declarations

Use Cases

Quiz: Extensions

Exercise: Converting and Creating a Measurement Unit

17.

Collections

11 Lessons

Walk through Kotlin collections, including lists, sets, maps, arrays, and inventory management.

Collection Types and Hierarchy

Arrays and Their Operations

Quiz: Collections

Exercise: Inventory Management

18.

Operator Overloading

9 Lessons

Go hands-on with operator overloading in Kotlin to improve code readability and functionality.

Introduction to Operator Overloading

Operators: Arithmetic, In, and Range

The iterator Operator

Operators: Equality, Inequality, and Comparison

Indexed Access Operator and Augmented Assignments

Operators: Unary, Increment, and Decrement

Operator Precedence and the invoke Operator

Quiz: Operator Overloading

Exercise: Money Operations

19.

Kotlin’s Type System

5 Lessons

Grasp the fundamentals of Kotlin's type system, including nullability, classes, and the Nothing type.

Introduction to the Kotlin Type System

Classes and Their Generated Types

Introduction to the Nothing Type

Quiz: Kotlin’s Type System

Exercise: User Authentication

20.

Generics

8 Lessons

Solve problems in leveraging Kotlin generics for flexible, type-safe, and reusable code.

Introduction to Generics

Generic Functions

Generic Classes and Nullability

Generic Interfaces

Utilizing Generics in Inheritance and Implementation

Generic Type Erasure and Constraints

Quiz: Generics

Exercise: Generic Stack Implementation

Final Course Assessment

Assessment

Create a Workout Manager

Project

23.

Conclusion

1 Lessons

Tackle Kotlin essentials and build on your knowledge for Android and JVM apps.

Wrap Up

Course Author

Marcin Moskała

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