Scala basic data types

Value type	Range
Byte	8-bit signed two’s complement integer (-27 to 27 - 1, inclusive)
Short	16-bit signed two’s complement integer (-215 to 215 - 1, inclusive)
Int	32-bit signed two’s complement integer (-231 to 231 - 1, inclusive)
Long	64-bit signed two’s complement integer (-263 to 263 - 1, inclusive)
Char	16-bit unsigned Unicode character (0 to 216 - 1, inclusive)
String	a sequence of Chars
Float	32-bit IEEE 754 single-precision float
Double	64-bit IEEE 754 double-precision float
Boolean	true or false

Data types shown above reside in package scala except String! String is a member of java.lang package and it's automatically imported therefore it's implicitly converted to scala's WrappedString class (it used to convert to RichString before scala 2.8.1). We can call WrappedString's methods on a string. Voila!