In Scala, strings can be concatenated using the plus operator +. Here's an example:
val str1 = "Hello"
val str2 = "World"
val str3 = str1 + " " + str2
println(str3) // Output: Hello World
In this example, we have defined two variables str1 and str2 which contain the strings "Hello" and "World" respectively. We then concatenate them using the + operator and store the result in a new variable str3. Finally, we print the concatenated string.
We can also concatenate a string with other data types:
val name = "John"
val age = 30
val info = "My name is " + name + " and I am " + age + " years old."
println(info) // Output: My name is John and I am 30 years old.
In this example, we have concatenated a string variable name and an integer variable age using the + operator. The resulting concatenated string is stored in the variable info and printed to the console.