please help understanding syntax

[John Goche]

Hello,

I am looking at the java code on the following page:

http://gnuc.in/resources/archives/1404

There I find the following, but I do not
understand the syntax Auth.background() { ... }

public void checkAccount(final Account account)
{
Auth.background()
{
@Override
public void run()
{
Auth.checkAccount(account, this, new CustomCallback()
{
@Override
public void handle(int resultCode)
{
// ...
}
});
}
});
}

Can someone please explain the syntax Auth.background() { ... } .
I understand the rest of the syntax.

Thanks,

John Goche

 

[Roedy Green]

Can someone please explain the syntax Auth.background() { ... } .
I understand the rest of the syntax.

see http://mindprod.com/jgloss/anonymousclasses.html

 

[Steven Simpson]

public void checkAccount(final Account account)
{
Auth.background()
{
@Override
public void run()
{
Auth.checkAccount(account, this, new CustomCallback()
{
@Override
public void handle(int resultCode)
{
// ...
}
});
}
});
}

Can someone please explain the syntax Auth.background() { ... } .

It's a syntax error, surely? Try sticking it in a syntax-aware editor
with a 'class X { }' around it. When I add the closing brace in emacs,
I'm told "Mismatched parentheses".

Perhaps it's supposed to be 'new Auth.background()', though that's an
unconventional name for a class.

Perhaps it's supposed to be 'new Auth.background(new Runnable() { ...'.

....

 

[Lew]

It's a syntax error, surely? Try sticking it in a syntax-aware editor with a
'class X { }' around it. When I add the closing brace in emacs, I'm told
"Mismatched parentheses".

Perhaps it's supposed to be 'new Auth.background()', though that's an
unconventional name for a class.

Perhaps it's supposed to be 'new Auth.background(new Runnable() { ...'.

...

Whatever it's supposed to be, the code at that site is not compilable, nor
does the author even provide complete classes. It is evidence that mere
presence on the Web does not make for good information.

 

[Steven Simpson]

Perhaps it's supposed to be 'new Auth.background()', though that's an
unconventional name for a class.

Perhaps it's supposed to be 'new Auth.background(new Runnable() { ...'.

D'oh! For the Runnable case, I meant 'Auth.background(new Runnable()
{...'. Too many 'new's. Not that the extra 'new' was necessarily
wrong, just not intended.

 

[Roedy Green]

It's a syntax error, surely? Try sticking it in a syntax-aware editor
with a 'class X { }' around it. When I add the closing brace in emacs,
I'm told "Mismatched parentheses".

for samples of anonymous classes that will compile, see
http://mindprod.com/jgloss/anonymousclasses.html