Groups > comp.lang.java.programmer > #23456 > unrolled thread

Exception in thread "main" java.awt.HeadlessException

Started by	SpreadTooThin <bjobrien62@gmail.com>
First post	2013-04-14 20:53 -0700
Last post	2013-04-15 10:41 -0700
Articles	3 — 3 participants

Back to article view | Back to comp.lang.java.programmer

  Exception in thread "main" java.awt.HeadlessException SpreadTooThin <bjobrien62@gmail.com> - 2013-04-14 20:53 -0700
    Re: Exception in thread "main" java.awt.HeadlessException paul.cager@gmail.com - 2013-04-15 03:23 -0700
    Re: Exception in thread "main" java.awt.HeadlessException Roedy Green <see_website@mindprod.com.invalid> - 2013-04-15 10:41 -0700

#23456 — Exception in thread "main" java.awt.HeadlessException

From	SpreadTooThin <bjobrien62@gmail.com>
Date	2013-04-14 20:53 -0700
Subject	Exception in thread "main" java.awt.HeadlessException
Message-ID	<237b5bd9-cfc3-4d9b-a74c-1fc62743daf3@googlegroups.com>

I am having trouble getting a jar file to run properly.
1st I had logged into the Raspberry from my MAC using XQuartx xterm

    bash-3.2$ssh -X pi@raspberrypi
    pi@raspberrypi ~ $ echo $DISPLAY
    localhost:10.0
    pi@raspberrypi ~ $wish

I checked the xwindows system and found the following.
And I get wish's display on my mac as an x-window.
But when I run my java installation jar file I get this:

    pi@raspberrypi ~ $ java -version
    java version "1.7.0_10"
    Java(TM) SE Embedded Runtime Environment (build 1.7.0_10-b18, headless)
    Java HotSpot(TM) Embedded Client VM (build 23.6-b04, mixed mode)


    pi@raspberrypi ~ $ java -jar MY-installer.jar
    Exception in thread "main" java.awt.HeadlessException
    at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)
    at java.awt.Window.<init>(Window.java:535)
    at java.awt.Frame.<init>(Frame.java:420)
    at java.awt.Frame.<init>(Frame.java:385)
    at javax.swing.JFrame.<init>(JFrame.java:180)
    at org.xxxx.installer.Installer.<init>(Installer.java:62)
    at org.xxxx.installer.Installer.main(Installer.java:53)
    pi@raspberrypi ~ $ 

So.. What's going on? Any ideas?
I installed java from
http://www.oracle.com/technetwork/java/embedded/downloads/javase/index.html
ARMv6/7 Linux - Headless EABI, VFP, SoftFP ABI, Little Endian1

[toc] | [next] | [standalone]

#23457

From	paul.cager@gmail.com
Date	2013-04-15 03:23 -0700
Message-ID	<12b8001a-3539-43d9-b262-ac6f92e8c82c@googlegroups.com>
In reply to	#23456

On Monday, 15 April 2013 04:53:09 UTC+1, SpreadTooThin  wrote:
> I am having trouble getting a jar file to run properly.
> 
> 1st I had logged into the Raspberry from my MAC using XQuartx xterm
> I installed java from
> 
> http://www.oracle.com/technetwork/java/embedded/downloads/javase/index.html
> 
> ARMv6/7 Linux - Headless EABI, VFP, SoftFP ABI, Little Endian1

You have installed the "reduced footprint" *headless* version of the Java runtime on your Pi, so it doesn't support GUIs. You will need to install a full version of Java (not the embedded version).

[toc] | [prev] | [next] | [standalone]

#23458

From	Roedy Green <see_website@mindprod.com.invalid>
Date	2013-04-15 10:41 -0700
Message-ID	<oteom8p9mcd6f0kgp11f5l7ui7jlojo3ls@4ax.com>
In reply to	#23456

On Sun, 14 Apr 2013 20:53:09 -0700 (PDT), SpreadTooThin
<bjobrien62@gmail.com> wrote, quoted or indirectly quoted someone who
said :

>    Exception in thread "main" java.awt.HeadlessException

see http://mindprod.com/jgloss/runerrormessages.html#HEADLESSEXCEPTION
-- 
Roedy Green Canadian Mind Products http://mindprod.com
Computer programming is the best remedy for pain (physical or emotional) 
I have encountered. It requires so much concentration there is nothing left 
over to pay attention to the pain. They should teach this in AA.

[toc] | [prev] | [standalone]

csiph-web

Exception in thread "main" java.awt.HeadlessException

Contents

#23456 — Exception in thread "main" java.awt.HeadlessException

#23457

#23458