Kotlin TutorialLesson 8Free preview

Kotlin Data Types

This lesson is part of Kotlin · All levels

Summary

This lesson discusses the categories of built-in data types in Kotlin. As a pure object-oriented language, all data types in Kotlin are objects (no raw primitive types are exposed as in Java). Kotlin provides numerical types (Byte, Short, Int, Long, Float, Double), Boolean, Char, and String.

Key points

All the data types in Kotlin are represented as class objects.
The standard integer type is 'Int' (32-bit), and for very large numbers 'Long' (64-bit) is used.
The standard decimal type is 'Double' (64-bit), and 'Float' (32-bit) ends with the letter 'F'
Conversion of numeric data types does not occur implicitly but must be explicit (e.g.: '.toInt()')

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