String templates

Kotlin has support for templates for the String type. This is useful because it helps us to avoid concatenation in code.

Let's look at an example for 4_StringTemplate.kts:

val name = "Atrium"
println("Hello ${name}")

The output is as follows:

The curly brackets are optional here. println("Hello ${name}") can be written as println("Hello $name"), b ut it is good practice to use them to indicate the boundaries of the expression.

Let's look at 4a_StringTemplate.kts:

val name = "Atrium"
println("Hello $name")

The output is as follows:

Now consider the following code in Java:

myName= "tanbul"
System.out.println("my name is" + myName);

Here, we meant to print tanbul, but due to a formatting error, this code prints my name istanbul. We want to correct the code as follows:

myName= "tanbul"
System.out.println("my name is " + myName);

Kotlin's string template really helps to avoid any possible formatting errors from string concatenation. In Kotlin, we write the preceding code with clear syntax as follows:

myName= "tanbul"
println("my name is ${myName}")

This prints the following:

my name is tanbul
上一章目录下一章