java-devel August 2005

java-devel@lists.fedoraproject.org

50 participants
57 discussions

avalon-framework and doclet classes
by Anthony Green 06 Jan '06

06 Jan '06

Gary - I was trying to build something recently that required org.apache.avalon.framework.logger.Log4JLogger from avalon-framework. The avalon-framework.jar file in FC4 appears to be missing this class. I grabbed the SRPM file from rawhide and attempted to build that instead. The build failed with this... [javadoc] java.lang.ClassNotFoundException: com.sun.tools.doclets.standard.Standard not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}} I've seen this before. It seems that our com-sun-javadoc or com-sun-tools-doclets-Taglet jar should be on the default classpath somehow. In any case, I noticed that this build of the jar file includes the proper class, but as far as I can tell, this is the same SRPM that was used in FC4. Why wouldn't the FC4 jar file contain the Log4JLogger class? Thanks! AG

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ecj problem and patch
by Anthony Green 29 Oct '05

29 Oct '05

As discussed on #fedora-java IRC (irc.freenode.net), The Eclipse batch compiler appears to place bootclasspath before classpath, making it impossible to override classes in libgcj.jar. This is a problem for jpackages wanting to use xml-commons-apis, which provides an alternate version of org.w3c.dom. I produced the following patch, which needs to be applied last in our set of Eclipse patches. Another snag I hit was that the FC4 Eclipse SRPM doesn't build anymore, since the archived make files reference an outdated version of mozilla. swttmp/build.sh should probably contain something like this instead of hardcoded values: GECKO_INCLUDES=`pkg-config mozilla-gtkmozembed --cflags` GECKO_LIBS='pkg-config mozilla-gtkmozembed --libs` But I see that patching this isn't simple because build.sh is extracted from a .zip file at build time. Hopefully overholt has a good idea for fixing this. While eclipse didn't build - it did build enough to give me a jdtcore.jar file I could manually install (after generating jdtcore.jar.so by hand). My tests of the patched compiler indicate that this is a step closer to the right solution. Can we get this into FC4 and rawhide? AG

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GNU Classpath distro DevJam
by Mark Wielaard 07 Sep '05

07 Sep '05

Hi all, Various Debian packagers and developers are interested in coming together to improve the Free Software tool chain, the programs and the free runtime environments for software written in the java programming language. For such a meeting we would like to include packagers from various distributions to coordinate on library names, dependency and versioning. And to share experiences on how to integrate and map dependencies of tools like ant and maven when creating traditional GNU/Linux distribution packages. So we are proposing a developer and packager meeting around coordinating and improving the state of packaging of large scale applications written in the java programming language using the GNU Classpath, gcj and other free java-like tool chains for the various GNU/Linux distributions. Please see DevJam wiki for details: http://java.debian.net/index.php/DevJam We hope to get together a group of (20 till 30) people wanting to do some hands on hacking to show the state of the art in packaging. Resulting in the availability of several new packages, improvements to the free tool chains and cross-distribution packaging conventions quickly after the meeting. One of the ideas to keep the cost down for now is sharing the meeting with another group in Oldenburg, Germany, from September 21st to September 25th. http://meeting.ffis.de/Oldenburg2005/ If you are interested please add you name and thoughts about how to make such a meeting most effective to the wiki! And please contact us if you are interested in sponsoring the effort. Cheers, Mark -- Escape the Java Trap with GNU Classpath! http://www.gnu.org/philosophy/java-trap.html Join the community at http://planet.classpath.org/

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java-gcjHEAD-compat fixes
by Thomas Fitzsimmons 06 Sep '05

06 Sep '05

Hi, I fixed some things in java-gcjHEAD-compat: - removed the file conflicts with java-gcj-compat, so java-gcjHEAD-compat will install cleanly beside other java-gcj-compat installations - added "javac" to the installed tools, using Gary's bootstrap ecj jar Here are Andrew's instructions for creating a JPackage alternative for GCJ HEAD: https://www.redhat.com/archives/fedora-devel-java-list/2005-May/msg00046.ht… The installation of these packages runs smoothly now. Tom

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[OT] jpackage.org site down?
by Dariusz J. Garbowski 29 Aug '05

29 Aug '05

Hi, Does anybody know what's wrong with http://www.jpackage.org/ website? I cannot access it, the browser waits forever for the content... Anybody else seeing this? Regards, Dariusz -- Dariusz J. Garbowski ___________________________________________________________ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

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batik [Fwd: Re: com.sun.image.*]
by Anthony Green 24 Aug '05

24 Aug '05

If anybody is interested in running batik on our free stack, here's some info on what needs doing... AG

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HelloWorld Example Won't compile
by Charles Curley 24 Aug '05

24 Aug '05

I took the source for the HelloWorld example in the Tomcat5 samples (http://your.server:8080/servlets-examples/helloworld.html), and tried to compile it. [javac] Compiling 1 source file to /home/ccurley/src/com/charlescurley/hello/classes [javac] ---------- [javac] 1. WARNING in /home/ccurley/src/com/charlescurley/hello/src/HelloWorld.java [javac] (at line 5) [javac] public class HelloWorld extends HttpServlet { [javac] ^^^^^^^^^^ [javac] The serializable class HelloWorld does not declare a static final serialVersionUID field of type long [javac] ---------- [javac] 1 problem (1 warning) What am I missing here? [ccurley@taltos src]$ echo $CLASSPATH /usr/share/tomcat5/bin/:/usr/bin:/usr/share/java/servletapi5.jar:. -- Charles Curley /"\ ASCII Ribbon Campaign Looking for fine software \ / Respect for open standards and/or writing? X No HTML/RTF in email http://www.charlescurley.com / \ No M$ Word docs in email Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB

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Java OpenGL on FC4
by John M. Gabriele 23 Aug '05

23 Aug '05

What's preferred for use on FC4: jogl or lwjgl? Or is there a third option -- maybe some way to do it with Java-Gnome? I can't find jogl or lwjgl with yum search. I found some jogl rpms in Anthony Green's folder: http://people.redhat.com/green/FC4/ but when I try to install them it tells me: [root@localhost temp]# ls *.rpm jogl-1.1b11-1fc.i386.rpm jogl-javadoc-1.1b11-1fc.i386.rpm [root@localhost temp]# rpm -ihv jogl-* error: Failed dependencies: libjawt.so.6 is needed by jogl-1.1b11-1fc.i386 Looks like a libjawt was renamed, but these rpms don't know about it. ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

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Starting Tomcat
by Charles Curley 23 Aug '05

23 Aug '05

I have FC4 as updated, and a slew of Java packages installed in order to run tomcat. I get the following error when trying to start it: -------------------------------------------------- [root@taltos lib]# service tomcat5 start Starting tomcat5: lock file found but no process running for pid 11395, continuing /usr/bin/rebuild-jar-repository: error: could not find jta Java extension for this JVM /usr/bin/rebuild-jar-repository: error: All detected jars were not found for this jvm find: warning: you have specified the -mindepth option after a non-option argument -type, but options are not positional (-mindepth affects tests specified before it as well as those specified after it). Please specify options before other arguments. find: warning: you have specified the -maxdepth option after a non-option argument -type, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments. Using CATALINA_BASE: /usr/share/tomcat5 Using CATALINA_HOME: /usr/share/tomcat5 Using CATALINA_TMPDIR: /usr/share/tomcat5/temp Using JAVA_HOME: /usr/lib/jvm/java [ OK ] [root@taltos lib]# -------------------------------------------------- I notice that /var/lib/tomcat5/common/lib/[jta].jar -> /could/not/find/extension/for/this/jvm, which is a cute way of telling me that the symlink is broken. OK, what should this link point to? -------------------------------------------------- [root@taltos lib]# locate jta | xargs ls -l -rwx------ 1 ccurley ccurley 6841 May 26 13:06 /home/ccurley/.emacs.d/site-lisp/jde/lisp/jtags -rwx------ 1 ccurley ccurley 6678 May 26 13:06 /home/ccurley/.emacs.d/site-lisp/jde/lisp/jtags.csh lrwxrwxrwx 1 root root 51 Aug 18 13:10 /usr/lib/jvm-exports/java-1.4.2-gcj-1.4.2.0/jta-1.4.2.0.jar -> /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/lib/jta.jar lrwxrwxrwx 1 root root 15 Aug 18 13:10 /usr/lib/jvm-exports/java-1.4.2-gcj-1.4.2.0/jta-1.4.2.jar -> jta-1.4.2.0.jar lrwxrwxrwx 1 root root 15 Aug 18 13:10 /usr/lib/jvm-exports/java-1.4.2-gcj-1.4.2.0/jta.jar -> jta-1.4.2.0.jar lrwxrwxrwx 1 root root 32 Aug 18 13:10 /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/lib/jta.jar -> /usr/share/java/libgcj-4.0.1.jar lrwxrwxrwx 1 root root 38 Aug 21 19:08 /var/lib/tomcat5/common/lib/[jta].jar -> /could/not/find/extension/for/this/jvm -------------------------------------------------- I have installed Sun's jvm via the jpackage proceedure. -------------------------------------------------- [root@taltos lib]# pre sun java-1.5.0-sun-1.5.0.04-1jpp java-1.5.0-sun-demo-1.5.0.04-1jpp java-1.5.0-sun-devel-1.5.0.04-1jpp java-1.5.0-sun-fonts-1.5.0.04-1jpp java-1.5.0-sun-alsa-1.5.0.04-1jpp java-1.5.0-sun-plugin-1.5.0.04-1jpp java-1.5.0-sun-jdbc-1.5.0.04-1jpp -------------------------------------------------- Do I need Sun's jdk in order to develop servlets? -- Charles Curley /"\ ASCII Ribbon Campaign Looking for fine software \ / Respect for open standards and/or writing? X No HTML/RTF in email http://www.charlescurley.com / \ No M$ Word docs in email Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB

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JOnAS on gcj conformance test results
by Andrew Haley 22 Aug '05

22 Aug '05

Tom and Bryce made a patch to fix the class loader deadlock that Bryce said was blocking testsuite runs, and I applied it. I thought it might be interesting to run the testsuite, but I remembered Bryce's comment about running out of memory with many threads, so I reduced the thread stack size to 256k, which is the same as Sun IIRC. I ran the testsuite, and got some results: 91.07% success rate. Results here: http://people.redhat.com/~aph/jeremie-Linux-HSQL1-1.4.2-$%7bwebcontainer.na… Running the same tests with IBM's jvm gets 95.75%. This is good, I think. The *really* good news is that JOnAS did not grow unreasonably: it never exceeded about 300M. On that basis, I don't think there's any pressing need to search for memory leaks. However, the test harness was running under IBM's java, not gcj. That's why the test result is reported as IBM. JOnAS itself was running on gcj. I had trouble running the test harness itself on gcj, so I'm going to explore that later if I get the chance. It seems that the test harness relies on some correct behaviour of javax.naming that we're not handling correctly: all the tests fail on the harness side with traces like Exception raised in setup: javax.naming.NamingException: javax.naming.NamingException: javax.naming.NameNotFoundException: 1.412 name "bankManagerROHome" not bound Caused by: javax.naming.NameNotFoundException: name "bankManagerROHome" not bound at org.objectweb.jeremie.services.registry.jndi.JRMIRegistryContext.lookup(javax.naming.Name) (/usr/lib/libjonathan-jeremie-4.2.jar.so) at javax.naming.InitialContext.lookup(javax.naming.Name) (/home/aph/gcc-4_0-branch/install/lib/libgcj.so.6.0.0) at org.objectweb.carol.jndi.spi.JEREMIEContext.lookup(javax.naming.Name) (/usr/lib/libow_carol-1.8.9.3.jar.so) at org.objectweb.carol.jndi.spi.JEREMIEContext.lookup(java.lang.String) (/usr/lib/libow_carol-1.8.9.3.jar.so) at javax.naming.InitialContext.lookup(java.lang.String) (/home/aph/gcc-4_0-branch/install/lib/libgcj.so.6.0.0) at org.objectweb.carol.jndi.spi.MultiContext.lookup(java.lang.String) (/usr/lib/libow_carol-1.8.9.3.jar.so) at org.objectweb.carol.jndi.spi.ContextWrapper.lookup(java.lang.String) (/usr/lib/libow_carol-1.8.9.3.jar.so) at javax.naming.InitialContext.lookup(java.lang.String) (/home/aph/gcc-4_0-branch/install/lib/libgcj.so.6.0.0) at ... So, we need to find out why all tests fail with a javax.naming.NameNotFoundException when the test harness is run under gcj. Many of the test failures also seem to be caused by a javax.naming.NameNotFoundException, so this might be a common problem. On the downside: I saw the deadlock in the class loader again, even after Bryce's patch. I'll try to liase with Tom and Bryce to do some more debugging. gcj is not correctly initializing JOnAS' trace properties. This means that it's impossible to enable -- for example -- CAROL tracing. This is v.v.v. annoying, so I'm going to investigate it. More later. Andrew.

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java-devel August 2005