vsnprintf like

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stef - 20 Aug 2007 16:07 GMT

Hello,

I would like to do my "own" printf.
Under C I used to play with the classic "vsnprintf" :

void print_it(char *app, size_t num, ...)
{
va_list arg;
char buf[1024];
...
va_start(arg, num);
vsnprintf(buf, ..., ..., arg);
...
}

How could I do that with Java ?

thanks for your help...

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Joshua Cranmer - 20 Aug 2007 17:58 GMT

> Hello,
>
> I would like to do my "own" printf.
> Under C I used to play with the classic "vsnprintf" :
>
> void print_it(char *app, size_t num, ...)

Using Java 5, the method header would look like:
void print_it(String app, Object ... args)

The args object would act like an array of Objects.

Signature

Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth

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Mark Rafn - 20 Aug 2007 20:24 GMT

>I would like to do my "own" printf.

Why your "own", rather than a built-in one?

>Under C I used to play with the classic "vsnprintf" :

Under 1.5 and later PrintStream has a format(String, Object...) method. This
is pretty close to the C printf methods. Or just use the java.util.Formatter
directly.
--
Mark Rafn dagon@dagon.net <http://www.dagon.net/>

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vsnprintf like

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