Date: Wed, 2 Feb 2011 10:44:48 +0200 From: Achilleas Mantzios <achill@matrix.gatewaynet.com> To: freebsd-java@freebsd.org Subject: Re: image-manipulation in Java without X11 Message-ID: <201102021044.49408.achill@matrix.gatewaynet.com> In-Reply-To: <4D490AC0.5080905@aldan.algebra.com> References: <4D490AC0.5080905@aldan.algebra.com>
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try java -Djava.awt.headless=true Στις Wednesday 02 February 2011 09:41:52 ο/η Mikhail T. έγραψε: > Hello! > > I'm trying to port a Java-application, which sometimes needs to process > (get dimensions, possibly -- resize) a few images. Whenever it does > this, it needs a valid $DISPLAY in the environment, otherwise an > exception like this is thrown: > > |java.lang.InternalError: Can't connect to X11 window server using > ':0.0' as the value of the DISPLAY variable. > at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) > at > sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52) > at > sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155) > at java.security.AccessController.doPrivileged(Native Method) > at > sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:169) > at > java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68) > at > java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1135) > | > > Apparently, the first thing AWT is doing is initialize X11 -- even if it > is not going to need X11 for anything... This makes the program (almost) > unusable as a daemon... > > I wonder if it is possible to a) make AWT a little smarter in this > regard -- even if only on FreeBSD; or b) do image-processing in Java > using some other classes?.. > > Thanks! Yours, > > -mi > > || > _______________________________________________ > freebsd-java@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-java > To unsubscribe, send any mail to "freebsd-java-unsubscribe@freebsd.org" > -- Achilleas Mantzios
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