NetBeans 8.0 - Upgrading My Source Code

I have heard that in NetBeans 8.0, which has full support for the new Java 8¹, you can have your source code transformed to make use of the latest and greatest Java 8 has to offer.

Naturally, I wish to test this. I've chosen my YPPO project for it.

Progress

It seems easy enough. Just select Source in the main menu and choose Inspect².

It transpired that I require FindBugs to use All Analyzers, but NetBeans automatically asked if I wanted to install it.

A lot of the inspection messages are regarding missing JavaDoc. I'm going to skip over those (as being not interesting).

Functional Operations

Use functional operations instead of imperative style loop.

public static void addErrorMessages(List<String> messages)
{
    for (String message : messages)
    {
        addErrorMessage(message);
    }
}

Got turned into:

public static void addErrorMessages(List<String> messages)
{
    messages.stream().forEach((message) ->
    {
        addErrorMessage(message);
    });
}

private void persistGalleries(Map<String, Gallery> galleries)
{
    for (String path : galleries.keySet())
    {
        Gallery gallery = galleries.get(path);
        logger.log(Level.FINE, "persistGalleries persist gallery {0}.", gallery);
        galleryBean.create(gallery);//em.persist(gallery);
    }
}

Got turned into:

private void persistGalleries(Map<String, Gallery> galleries)
{
    galleries.keySet().stream().map((path) -> galleries.get(path)).map((gallery) ->
    {
        logger.log(Level.FINE, "persistGalleries persist gallery {0}.", gallery);
        return gallery;
    }).forEach((gallery) ->
    {
        galleryBean.create(gallery);
    });
}

Lambda Expressions

Anonymous inner class creation can be turned into a lambda expression.

Collections.sort(list, new Comparator<Gallery>()
{
    @Override
    public int compare(Gallery t, Gallery t1)
    {
        return t.getCreationDate().compareTo(t1.getCreationDate());
    }
});

Got turned into:

Collections.sort(list, (Gallery t, Gallery t1) -> t.getCreationDate().compareTo(t1.getCreationDate()));

Notes

Despite NetBeans telling me that everything is perfectly fine, actually deploying it to GlassFish using the new Streams throws an ArrayIndexOutOfBoundsException. See [3].

I'm sure they're already hard at work.

References

[1] Overview of JDK 8 Support in NetBeans IDE

https://netbeans.org/kb/docs/java/javase-jdk8.html

[2] 7.11.21 Using Hints in Source Code Analysis and Refactoring

http://docs.oracle.com/cd/E40938_01/doc.74/e40142/build_japps.htm#NBDAG613

[3] Collection streams provoke java.lang.ArrayIndexOutOfBoundsException

https://java.net/jira/browse/GLASSFISH-21014