In Scala, we can convert a string to an integer using the toInt method provided by the String class. Here's an example:
val str = "123"
val num = str.toInt
println(num) // Output: 123
In the above code, we declared a string variable str with the value "123". We then called the toInt method on str and assigned the result to the integer variable num. The println statement then prints the value of num.
We can also use the Integer.parseInt method to convert a string to integer.
val str = "456"
val num = Integer.parseInt(str)
println(num) // Output: 456
Here, we declared the same string variable str with the value "456". We used the Integer.parseInt() method to convert the string to an integer and assigned the result to the integer variable num. The println statement then prints the value of num.