scala_tutorial

13. SCALA – STRINGS
Scala
This chapter takes you through the Scala Strings. In Scala, as in Java, a string is an immutable
object, that is, an object that cannot be modified. On the other hand, objects that can be
modified, like arrays, are called mutable objects. Strings are very useful objects, in the rest
of this section, we present important methods of java.lang.String class.
Creating a String
The following code can be used to create a String:
var greeting = "Hello world!";
or
var greeting:String = "Hello world!";
Whenever compiler encounters a string literal in the code, it creates a String object with its
value, in this case, “Hello world!”. String keyword can also be given in alternate declaration
as shown above.
Try the following example program.
object Demo {
val greeting: String = "Hello, world!"
}
def main(args: Array[String]) {
}
println( greeting )
Save the above program in Demo.scala. The following commands are used to compile and
execute this program.
\>scalac Demo.scala
\>scala Demo
Output:
88