How come... part 1: importing statically

[Richard Warburton]

Hi,

Arrays.asList("--(!)Error loading\n").stream().forEach(System.out::printf);
>
> but I can’t write:
>
> import static java.lang.System.out::printf;
>
> . . .
>
> printf("--(!)Error loading\n");
>
>
> What’s up with that?


import static let's you import static fields or methods with an abbreviated
syntax.  printf isn't a static field or method - its an instance method of
the PrintStream class.  On the other hand "out" is a static field of the
System class, so you can do:

import static java.lang.System.out;

out.printf("--(!)Error loading\n");

What you asking for is a situation where "import static" imports things
that aren't static. This would almost inevitably lead to an alternative
"How come ..." question!

(This is part 1 in my How come... series, more parts as they come.)
>

I will observe that this question didn't really have anything to do with
lambda expressions and stack overflow deals very well with general Java
questions.

regards,

  Richard Warburton

  http://insightfullogic.com
  @RichardWarburto <http://twitter.com/richardwarburto>