Java Gui - Revision history

Searchworks: remove spam

2010-11-23T23:32:14Z

remove spam

Aqisecoxefi at 22:45, 23 November 2010

2010-11-23T22:45:16Z

Searchworks: correct link

2009-11-12T04:40:13Z

correct link

B-flat at 22:51, 7 November 2009

2009-11-07T22:51:14Z

Searchworks: Category:How_to_-_JAVA

2009-10-22T23:10:57Z

Category:How_to_-_JAVA

24.6.121.61 at 05:38, 14 June 2008

2008-06-14T05:38:20Z

24.6.121.61: New page: == Java GUI Howto == *note: I am a linux newbie. The following steps are how I enabled the Java GUI functionality and may not be the correct way for everybody. If you know that one of thes...

2008-06-14T05:36:11Z

New page: == Java GUI Howto == *note: I am a linux newbie. The following steps are how I enabled the Java GUI functionality and may not be the correct way for everybody. If you know that one of thes...

New page

== Java GUI Howto ==
*note: I am a linux newbie. The following steps are how I enabled the Java GUI functionality and may not be the correct way for everybody. If you know that one of these steps are bad, please correct it.

1) Add jamvm to the gumstix-x11-image and compile/download to gumstix.
- modify '''(ROOT)/gumstix-oe/com.gumstix.collection/packages/images/gumstix-x11-image.bb''' and add '''jamvm''' to the IMAGE_INSTALL list
- follow the steps at [http://www.gumstix.net/Software/view/Getting-started/Quick-start/111.html this howto] to compile and download image to gumstix

2) Add the GUI libs
- If you try to run a java GUI app now, it will print the error

<code>
java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:607)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:103)
at java.awt.Window.<init>(Window.java:133)
at java.awt.Frame.<init>(Frame.java:246)
at javax.swing.JFrame.<init>(JFrame.java:123)
at HelloJavaWorld.main(HelloJavaWorld.java:8)
Caused by: java.lang.UnsatisfiedLinkError: Native library `gtkpeer' not found (as file `libgtkpeer.so') in gnu.classpath.boot.library.path and java.library.path
at java.lang.Runtime.loadLibrary(Runtime.java:763)
at java.lang.System.loadLibrary(System.java:662)
at gnu.java.awt.peer.gtk.GtkToolkit.<clinit>(GtkToolkit.java:173)
at java.lang.VMClass.forName(Native Method)
at java.lang.Class.forName(Class.java:233)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:583)
...5 more
</code>

- you must add libgtkpeer.so and libjawt.so. Both are located in the directory
'''(ROOT)/gumstix-oe/tmp/work/armv5te-angstrom-linux-gnueabi/classpath-0.96.1-r2/install/classpath-gtk/usr/lib/classpath'''
put it in /usr/lib/classpath directory on the gumstix.
''scp libgtkpeer.so libjawt.so root@<IP>:/usr/lib/classpath'' works, or any other method

3) run ldconfig

<code>
root@...$ ldconfig
</code>

4) point to display 0.0. You can do this by typing the line

<code>
root@...$ export DISPLAY=:0.0
<code>
before executing java

← Older revision		Revision as of 22:51, 7 November 2009
Line 48:		Line 48:
	before executing java		before executing java

		+	== Adding Classpath with GUI support to your image ==

		+	I enabled the GUI support by adding the two classpath lines to the INSTALL part of the image I use (gumstix-x11-32mb-image.bb), like so:
		+
		+	IMAGE_INSTALL += " \
		+	# multiple lines removed to shorten this text...
		+	classpath \
		+	classpath-awt \
		+	jamvm \
		+	"
		+	Consider making a user.collection recipe of your changes to not get conflicts when the repository is updated.

	[[Category:How_to_-_JAVA]]		[[Category:How_to_-_JAVA]]

← Older revision		Revision as of 23:10, 22 October 2009
Line 47:		Line 47:
	</code>		</code>
	before executing java		before executing java
		+
		+
		+
		+	[[Category:How_to_-_JAVA]]

@@ Line 1: / Line 1: @@
 == Java GUI Howto ==
 *note: I am a linux newbie. The following steps are how I enabled the Java GUI functionality and may not be the correct way for everybody. If you know that one of these steps are bad, please correct it.
@@ Line 18: / Line 10: @@
 - If you try to run a java GUI app now, it will print the error
-&lt;code&gt;
+<code>
     java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
        at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:607)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:103)
-       at java.awt.Window.&amp;lt;init&amp;gt;(Window.java:133)
+       at java.awt.Window.&lt;init&gt;(Window.java:133)
-       at java.awt.Frame.&amp;lt;init&amp;gt;(Frame.java:246)
+       at java.awt.Frame.&lt;init&gt;(Frame.java:246)
-       at javax.swing.JFrame.&amp;lt;init&amp;gt;(JFrame.java:123)
+       at javax.swing.JFrame.&lt;init&gt;(JFrame.java:123)
        at HelloJavaWorld.main(HelloJavaWorld.java:8)
     Caused by: java.lang.UnsatisfiedLinkError: Native library `gtkpeer' not found (as file `libgtkpeer.so') in gnu.classpath.boot.library.path and java.library.path
        at java.lang.Runtime.loadLibrary(Runtime.java:763)
        at java.lang.System.loadLibrary(System.java:662)
-       at gnu.java.awt.peer.gtk.GtkToolkit.&amp;lt;clinit&amp;gt;(GtkToolkit.java:173)
+       at gnu.java.awt.peer.gtk.GtkToolkit.&lt;clinit&gt;(GtkToolkit.java:173)
        at java.lang.VMClass.forName(Native Method)
        at java.lang.Class.forName(Class.java:233)
        at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:583)
        ...5 more
-&lt;/code&gt;
+</code>
 - you must add libgtkpeer.so and libjawt.so. Both are located in the directory
 '''(ROOT)/gumstix-oe/tmp/work/armv5te-angstrom-linux-gnueabi/classpath-0.96.1-r2/install/classpath-gtk/usr/lib/classpath'''
 put it in /usr/lib/classpath directory on the gumstix.
-''scp libgtkpeer.so libjawt.so root@&lt;IP&gt;:/usr/lib/classpath'' works, or any other method
+''scp libgtkpeer.so libjawt.so root@<IP>:/usr/lib/classpath'' works, or any other method
 ) run ldconfig
-&lt;code&gt;
+<code>
     ldconfig
-&lt;/code&gt;
+</code>
 ) point to display 0.0. You can do this by typing the line
-&lt;code&gt;
+<code>
     export DISPLAY=:0.0
-&lt;/code&gt;
+</code>
 before executing java
@@ Line 60: / Line 52: @@
 I enabled the GUI support by adding the two classpath lines to the INSTALL part of the image I use (gumstix-x11-32mb-image.bb), like so:
-  IMAGE_INSTALL += &quot; \
+  IMAGE_INSTALL += " \
     # multiple lines removed to shorten this text...
      classpath \
      classpath-awt \
      jamvm \
-     &quot;
 Consider making a user.collection recipe of your changes to not get conflicts when the repository is updated.
 [[Category:How_to_-_JAVA]]

@@ Line 4: / Line 4: @@
 ) Add jamvm to the gumstix-x11-image and compile/download to gumstix.
 - modify '''(ROOT)/gumstix-oe/com.gumstix.collection/packages/images/gumstix-x11-image.bb''' and add '''jamvm''' to the IMAGE_INSTALL list
-- follow the steps at [http://www.gumstix.net/Software/view/Getting-started/Quick-start/111.html this howto] to compile and download image to gumstix
+- follow the steps at [http://www.gumstix.net/User-How-To-s/view/Getting-started/Quick-start/110.html this howto] to compile and download image to gumstix

@@ Line 37: / Line 37: @@
 <code>
-    root@...$ ldconfig
+    ldconfig
 </code>
@@ Line 44: / Line 44: @@
 <code>
-    root@...$ export DISPLAY=:0.0
+    export DISPLAY=:0.0
-<code>
+</code>
 before executing java