Java Environment

[cortez]

GNU Classpath 0.20, Essential Libraries for Java, is a GNU project to create free core class libraries for use with virtual machines and compilers for the java programming language.

Recreate package as follows: cat classpath.tar.bz2*.ipk | bunzip2 -c | tar xf -

Part 1 in this post, part 2 in next post (due to forum upload limit )

 [ Invalid Attachment ]  (updated!)

[cortez]

Part 2 of GNU Classpath 0.20
Recreate package as described in first post.

 [ Invalid Attachment ]  (Updated!)

[cortez]

JamVM 1.4.2 is a new Java Virtual Machine which conforms to the JVM specification version 2 (blue book). In comparison to most other VM's (free and commercial) it is extremely small, with a stripped executable on PowerPC of only ~150K, and Intel 110K. However, unlike other small VMs (e.g. KVM) it is designed to support the full specification, and includes support for object finalisation, Soft/Weak/Phantom References, the Java Native Interface (JNI) and the Reflection API.

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[Meanie]

you're my hero. i'll try it out as soon as I get home. lemme throw this OQO in the corner and get my Zaurus back

[Chero]

Hello,

I have never used java before, but there are a few java apps I'd like to try.

Is it possible to run a .jar file and what is the syntax to do this.

When I try
# jamvm -jar Jabp.jar
I get :
Cannot create system class loader
......

I did :
# export JAVA_HOME=/usr/java/jamvm
# export PATH=$PATH:$JAVA_HOME/bin

I suppose there's more to be done ?

Are there some hardcore-java-users around ?

Have fun,
Chero.

[wjping119]

I have the same problems,but i did

# export JAVA_HOME=/usr/java/jamvm
# export PATH=/usr/java/jamvm/bin
# export CLASS_PATH=/usr/java/classpath

#/usr/java/jamvm/bin/jamvm -jar jlpt.jar
Cannot create system class loader
Exception occured while printing exception （java/lang/NoClassDefFoundError)...
Original exception was java/lang/UnsatisfiedLinkError
#

[Meanie]

seems like you forgot to package the libraries. there are only .a and .la in the classpath lib directory, no .so  

[cortez]

Sorry, you're right. I will update the classpath package shortly

[cortez]

Classpath package is fixed and updated. Please download from first and second post. I use following exports:

Code: [Select]

# export PATH=$PATH:/usr/java/jamvm/bin
# export CLASSPATH=/usr/java/jamvm/share/jamvm/classes.zip:/usr/java/classpath/share/classpath/glibj.zip
Good luck!

[pgas]

mirrored:
http://mail.pdaxrom.org/contrib/cortez/

(I've recreated the classpath package there)

[law]

hi,

has anyone tested jedit with jamvm and classpath 0.20?

[Meanie]

hi,

has anyone tested jedit with jamvm and classpath 0.20?
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I had jedit 4.2 working on classpath 0.19 and jamvm 1.4.0
This new version is causing some ClassCastExceptions. I might need to recompile jedit and see whether that fixes it.

[law]

I had jedit 4.2 working on classpath 0.19 and jamvm 1.4.0
This new version is causing some ClassCastExceptions. I might need to recompile jedit and see whether that fixes it.
[div align=\"right\"][a href=\"index.php?act=findpost&pid=114369\"][{POST_SNAPBACK}][/a][/div]

i get an Killed error if i try to start jedit. perhabs you could post jedit if you have recompiled it.

thanks

[cortez]

The GNU Classpath release notes mentions:

"This release depends on gtk+ 2.4 for AWT support. But gtk+ 2.6 or
higher is recommended. Included, but not activated by default in this
release is a Graphics2D implementation based on the Cairo Graphics
framework (http://www.cairographics.org). Enabling this makes programs
like JFreeChart and JEdit start up on GNU Classpath based runtimes."

I guess we need a rebuild  

[cortez]

I rebuild GNU classpath with Java2D/Cairo enabled. I also compiled jEdit version 4.3pre3 to see if it runs with current versions of JamVM and GNU Classpath.
jEdit can be run as follows:

Code: [Select]

jamvm -Dgnu.java.awt.peer.gtk.Graphics=Graphics2D -jar jEdit.jarWell, the good news is that jEdit indeed starts, but is't like Mark Wielaard, one of the Classpath developers said a while ago:

I always make sure jedit at least starts up when we are doing a new
release. And with each release it does become more and more usable. You
can now actually open a document, edit a bit, search and replace, etc.
But there are certainly still a lot of drawing/refresh bugs. Also the
embedded beanshell used to not work properly, but this might now be
fixed.

It's a nice to see such a demanding Swing application almost works.