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Kotlin Comments


Kotlin Comments

Comments can be used to explain Kotlin code, and to make it more readable. It can also be used to prevent execution when testing alternative code.


Single-line Comments

Single-line comments starts with two forward slashes (//).

Any text between // and the end of the line is ignored by Kotlin (will not be executed).

This example uses a single-line comment before a line of code:

Example

// This is a comment
println("Hello World") 
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This example uses a single-line comment at the end of a line of code:

Example

println("Hello World")  // This is a comment
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Multi-line Comments

Multi-line comments start with /* and ends with */.

Any text between /* and */ will be ignored by Kotlin.

This example uses a multi-line comment (a comment block) to explain the code:

Example

/* The code below will print the words Hello World
to the screen, and it is amazing */
println("Hello World")  
Try it Yourself »