8.27. Scala string

8.27.1. Example #

object Test { val greeting: String = "Hello,World!" def main(args: Array[String]) { println( greeting ) } } 

The above example defines the variable greeting is a string constant oftype String(java.lang.String) .

In Scala, the type of string is actually Java String , it doesn’t have its own String class.

In Scala String is an immutable object, so the object cannot be modified. This means that if you modify the string, a new string object willbe generated.

But other objects, such as arrays, are mutable objects. Next, we will introduce to you the commonly used ones java.lang.String method.