Gain insights into Kotlin’s basics, including variable declarations, data types, conditions, loops, and functions. Discover how to write simple Kotlin scripts and transition to advanced programming.

Kotlin is quickly joining the ranks of the most popular programming languages. Now that Google supports Kotlin for Android app development as the primary choice over Java, we’ll only see more developers making the switch. So if you’re looking to get started with Android app development, then you’ve come to the right place.

This course will be your guide on getting started with Kotlin. We’ll go over all the language basics including variable declarations, data types and the type system to conditions, loops, and functions.

After this course, you’ll be able to write simple Kotlin scripts and applications. With this solid understanding of the language basics, you’ll be able to more easily follow more advanced material covering functional and object-oriented programming.

Homam B.

What a brilliant course, its not too long so its fairly easy to get through in a weekend. Goes through the fundimentals of Kotlin in just the right amount of detail. I would recommend this as a first step into Kotlin language

"Brilliant course"

Patricio M.

I have completed the course and I have to say that it's extremely well done

The examples used are clear and easy to follow

The code is very clean and the instructor strives to write clear and concise code and he explains concepts very clearly

Kudos for a job well done!

"Extremely well done"

Alan J.

Clear explanations, and well organized. Highly recommended.

"Highly recommended"

Raphael A.

Excellent course. It's a beginner course in programming, but even as a Java programmer I've been able to remember a lot of things and get productive quickly in Kotlin. The course is well structured and the teacher knows the subject (I bought another course from the teacher).

"Excellent course"

Kotlin Crash Course for Programmers

Kotlin is a statically typed language, meaning that the data type of every expression is known at compile time.

# Integers

There are four basic data types to store integer numbers of different sizes in Kotlin:

val byte: Byte = 127
val short: Short = 32767
val int: Int = 2147483647
val long: Long = 9223372036854775807

> **Note:** The values assigned to each variable above are the largest allowed for the corresponding data type. This gives you an indication of their magnitude.

If you increase the assigned values even by one, the Kotlin compiler will complain because an overflow would occur at runtime (_try it!_).

# Floating Point Numbers

Additionally, Kotlin has `Float` and `Double` to store floating point numbers up to different precision and sizes:

val float: Float = 3.4028235e38f
val double: Double = 1.7976931348623157e308

Here again, the assigned values are the maximum allowed for the corresponding type.

Two things to note:
* The `e` in both values denotes exponentiation, for instance `1e3 == 1*10^3 == 1000`.
* In order to denote a `Float` value, you have to add the `f` suffix. Otherwise, Kotlin infers `Double` as the type of the number.

# Text

Kotlin uses the `Char` type for single characters and `String` for arbitrary sequences of characters:

Learn how to represent and store numbers and text in Kotlin.

Hello Kotlin!

Variables and Data Types

Conditions

Collections

Loops

Functions

Equality Checks

Exception Handling

Summary

Basic Data Types

Integers #

Floating Point Numbers #