JDK 9 RFR Update String.join sample code to use List convenience factory methods

[Lance Andersen]

looks fine joe
> On May 31, 2016, at 9:31 PM, Joseph D. Darcy <joe.darcy at oracle.com> wrote:
> 
> Hello,
> 
> The String.join javadoc contains some sample code to demonstrate how to use the method. The sample code can be improved with the new-in-JDK-9 List convenience factory method. Please review this patch to update the sample code:
> 
> --- a/src/java.base/share/classes/java/lang/String.java    Tue May 31 17:54:41 2016 -0700
> +++ b/src/java.base/share/classes/java/lang/String.java    Tue May 31 18:27:45 2016 -0700
> @@ -2424,9 +2424,7 @@
>      *
>      * <blockquote>For example,
>      * <pre>{@code
> -     *     List<String> strings = new LinkedList<>();
> -     *     strings.add("Java");strings.add("is");
> -     *     strings.add("cool");
> +     *     List<String> strings = List.of("Java", "is", "cool");
>      *     String message = String.join(" ", strings);
>      *     //message returned is: "Java is cool"
>      *
> 
> (A corresponding update should *not* be made to the String.join sample using a Set since the Set convenience factory methods do not guarantee ordering.)
> 
> Thanks,
> 
> -Joe

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
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