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From: Arie van Wingerden <xapwing@gmail.com>
To: kawa@sourceware.org
Subject: Need some help with Java - Kawa interop
Date: Thu, 01 Nov 2018 13:45:00 -0000	[thread overview]
Message-ID: <CADkALSGg=9RURk9-kG6qGPMUUx4fnJeQEdP0BQFX+4AJOX__yw@mail.gmail.com> (raw)

Trying to generate a random color for a shape in JavaFX.
This (lines 7-9 are the binding of r, g and b):

> (define (randomColor)

  (let (

    (rnd (java.lang.Math:random))

    (r (java.util.Random:nextInt 255))

    (g (java.util.Random:nextInt 255))

    (b (java.util.Random:nextInt 255)))

  (Color:rgb r g b)))


Generates warnings:
.\test.scm:7:34: warning - type integer is incompatible with required type
java.util.Random
.\test.scm:8:34: warning - type integer is incompatible with required type
java.util.Random
.\test.scm:9:34: warning - type integer is incompatible with required type
java.util.Random
.\test.scm:7:8: warning - cannot convert literal (of type gnu.math.IntNum)
to ClassType java.util.Random
.\test.scm:8:8: warning - cannot convert literal (of type gnu.math.IntNum)
to ClassType java.util.Random
.\test.scm:9:8: warning - cannot convert literal (of type gnu.math.IntNum)
to ClassType java.util.Random

What am I doing wrong?

TIA

             reply	other threads:[~2018-11-01 13:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-01 13:45 Arie van Wingerden [this message]
2018-11-02  5:08 ` Per Bothner

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