Don't understand java operator ? and :

Question

public static void openWebpage(URI uri) {
    Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;
    if (desktop != null && desktop.isSupported(Desktop.Action.BROWSE)) {
        try {
            desktop.browse(uri);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

And I don't know what the ? and the : at the end is meaning.

Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;

Can you help me?

score 1 · Accepted Answer · answered Apr 02 '16 at 08:38

1

This statement

Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;

is equivalent to

Desktop desktop;
if( Desktop.isDesktopSupported() )
    desktop = Desktop.getDesktop();
else
    desktop = null;

Ternary operators is what this is called. <condition> ? <true part> : <false part>

answered Apr 02 '16 at 08:38

Debosmit Ray

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Ok Thanks but its duplicated i dont know that i could not find it. Sorry I'll delete it. – Aaron Stein Apr 02 '16 at 08:42
it's fine, i guess – Debosmit Ray Apr 02 '16 at 08:42
It's hard to Google it when you don't know what it's called. Confuses lots if people. – user1751825 Apr 02 '16 at 08:46
@Merduma It would be nice, if you could accept/upvote an answer if your issue is resolved. From [here](http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work), "Accepting an answer is important as it both rewards posters for solving your problem and informs others that your issue is resolved." – Debosmit Ray Apr 02 '16 at 09:17
I couldn't check it because you can't check it in the first minutest. – Aaron Stein Apr 03 '16 at 18:32
@Merduma Yep! I understand. Glad I could help. :) – Debosmit Ray Apr 03 '16 at 18:39

Don't understand java operator ? and :

1 Answers1