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Re: Teaching "purely object-oriented" Java

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  Re: Teaching "purely object-oriented" Java Arne Vajhøj <arne@vajhoej.dk> - 2015-10-27 19:42 -0400

#32949 — Re: Teaching "purely object-oriented" Java

On 10/27/2015 6:17 PM, Stefan Ram wrote:
>    Some people complained that Java was not »purely
>    object-oriented« because one is forced to use non-static
>    methods. For example, in teaching Java, one has to write:

>    I observe that - using the standard JDK - one now can
>    write:
>
> public final class Main extends javafx.application.Application
> { public void start( final javafx.stage.Stage stage )
>    { java.lang.System.out.println( "Hello world!" ); }}

Yes. New feature in Oracle Java 8.

>    . Thus, now, we can teach Java right from the start without
>    any static methods!

>    (The program now does not terminate by itself, however,
>    But sometimes one can live with this, or has to add
>    »System.exit( 0 );«.)

Platform.exit() is better.

>    (But I do /not/ use this in my own course, since I do not
>    believe the static main method to be so bad for learners.)

The beginners are not looking for "pure OO", so I can not see
any problem using good old main.

And BTW todays fashion is multi-paradigm languages so "pure OO"
is old fashioned.

:-)

And it was never very practical anyway.

Arne

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