Question

if List(1,2,3) transforms to List.apply(1,2,3) then why new Array[String](3) does not transform to new Array[String].apply(3)?

I tried Array.apply(3) but the semantic is different from new Array[String](3).

Answer 1

When you call new Array[String](3) you are calling the Array constructor on the Array class with a single argument: 3. Alternatively, when you call Array(3) you are calling the apply method on the Array object. In Java this is known as a static method call. It is the same as calling Array.apply(3), as you expected.