[armedbear-devel] jcall jmethod java.lang

[David Dreisigmeyer]

On Fri, Aug 20, 2010 at 3:26 PM, David Kirkman <dkirkman at ucsd.edu> wrote:

> On Fri, Aug 20, 2010 at 12:13 PM, David Kirkman <dkirkman at ucsd.edu> wrote:
> > On Fri, Aug 20, 2010 at 11:48 AM, David Dreisigmeyer
> > <david.dreisigmeyer at gmail.com> wrote:
> >> Hi,
>
> I missed the bottom of your message!
>
> >> Also, this works:
> >> CL-USER> (jcall (jmethod "java.lang.Float" "intValue") 4.0)
> >> 4
>
> This works for you because 4.0 is the class argument to jcall, and it
> ends up being passed as a java.lang.Float.
>
** Should the above been called as:

CL-USER> (jcall (jmethod "java.lang.Float" "intValue") 4.0s0)

instead, and then (jcall (jmethod "java.lang.Double" "intValue") 4.0d0).


> You'll get an error if you try it with 4.0d0, or if you have your
> *read-default-float-format* set to double.
>
> >> but when I try this:
> >> (jcall (jmethod "java.lang.Float" "compare") 4.0 5.0)
> >> I get:
> >> No such method: java.lang.Float.compare()
>
> (jcall (jmethod "java.lang.Float" "compare" "float" "float") nil 4.0s0
> 5.0s0)
>
> or
>
> (jcall (jmethod "java.lang.Float" "compareTo" "java.lang.Float")
>       4.0s0 5.0s0)
>
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