Scala string

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.