{"id":33864,"date":"2024-01-04T15:48:49","date_gmt":"2024-01-04T10:18:49","guid":{"rendered":"https:\/\/www.oneclickitsolution.com\/blog\/?p=33864"},"modified":"2024-09-06T11:37:35","modified_gmt":"2024-09-06T06:07:35","slug":"variable-declaration-data-types-kotlin-language","status":"publish","type":"post","link":"https:\/\/www.oneclickitsolution.com\/blog\/variable-declaration-data-types-kotlin-language","title":{"rendered":"Kotlin: Variables Declaration, Data Types, and Conditionals"},"content":{"rendered":"\n

In our last blog, we discuss what is Kotlin? and what are the Advantages of Kotlin<\/strong><\/a>?<\/p>\n\n\n\n

So after getting this little bit knowledge about it now, we can move on basics.<\/p>\n\n\n\n

Let\u2019s start with the Variable declaration,<\/p>\n\n\n\n

How to Create a Variable?<\/h2>\n\n\n\n

it uses two different keywords to declare variables: val and var.<\/p>\n\n\n\n

Var keyword is known as a mutable variable. It means that the variable can be changed.<\/p>\n\n\n\n

Example:<\/p>\n\n\n\n

var count: Int = 10\ncount = 15<\/code><\/code><\/pre>\n\n\n\n
-> Val keyword is known as an immutable variable. It means that the variable cannot be changed.<\/p>\n\n\n\n
Example:<\/strong><\/p>\n\n\n\n
val languageName: String = “Kotlin”<\/p>\n\n\n\n
-> If you are trying to reassign immutable variable than its throw compiler error like<\/p>\n\n\n\n
\u201cval cannot be reassigned\u201d.<\/p>\n\n\n\n
<\/div>\n
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 Read More:<\/span> 7 Biggest Advantages of Kotlin over Java<\/a><\/p>\n<\/div>\n
<\/div>\n\n\n\n
Kotlin Basic Types<\/h2>\n\n\n\n
it is a statically typed language. So the type of variables is known during the compile time.<\/p>\n\n\n\n
Example:<\/p>\n\n\n\n
val language: Int\nval marks = 12.3<\/code><\/code><\/pre>\n\n\n\n
Here, the compiler knows that language is Int and marks is Double type before compile time.<\/p>\n\n\n\n
There are few types in Kotlin,<\/strong><\/p>\n\n\n\n