Formatting:
Strings can be formatted using the printf() method to get output in required formats.
object Demo {
def main(args: Array[String]) {
var floatVar = 10.123
var intVar = 5000
var stringVar = "Hello There"
var fs = printf("The value of the float variable is " + "%f, while the value of the integer " + "variable is %d, and the string" + "is %s", floatVar, intVar, stringVar);
println(fs)
}
}
Interpolation:
This mechanism evaluates the string value at runtime.
Strings can be interpolated or expanded using various ways.
s interpolatorIt allows the use of a variable directly in processing a string, when you prepend ‘s’ to it.
val name = "John"
println(s"Hello $name") //output: Hello John
String interpolation can also process arbitrary expressions.
println(s"2 + 3 = ${2 + 3}") //output: 2 + 3 = 5
f interpolatorIt allows creating a formatted String, similar to printf in C language. While using ‘f’ interpolator, all variable references should be followed by the printf style format specifiers such as %d, %i, %f, etc.
val height = 1.7d
val name = "John"
println(f"$name%s is $height%2.2f meters tall") //John is 1.70 meters tall
raw interpolatorIt is similar to s interpolator except that it performs no escaping of literals within a string.
Output with s option:
println(s"Result = \n a \n b")
Result =
a
b
Outout with raw option:
println(raw"Result = \n a \n b")
Result = \n a \n b
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