java-devel July 2005

java-devel@lists.fedoraproject.org

53 participants
53 discussions

Replacing FC4 Free Java for SUN's Java
by C.F. Scheidecker Antunes 27 Jul '05

27 Jul '05

Hello All, FC4 is interesting because it comes with java and all pre installed. However I need to replace all of that and have SUN's instead. Until FC3 I did everything myself manually by: 1 - Installing JDK under /opt/ and creating an /opt/java/ link 2 - creating links under /usr/bin/ for java and javac 3 - changing /etc/profile to include /opt/java/ on the path and create a classpath All Java stuff I've put under /opt/ That way I had total control. Now, FC4 has java stuff all over and config stuff all over. Rather than learning what it is (although I had not found documentation that explains all the details) I prefer to remove everything and do it the good old manual way. I've also tried jpackage but I did not like it. Again, no control and non-free is not as easy to install. Any good docs or comments on this? Anyone suffering from the same aggravations? Thanks, C.F.

10 20

Problem compiling tomcat5-5.0.30-8jpp_1fc
by David Walluck 27 Jul '05

27 Jul '05

I am not able to build on a Fedora distribution right now, but I am still hoping that the gcj hackers here can help me. Ultimately, I need tomcat5 built as it is required by eclipse 3.1. I am using gcc 4.0.1 (CVS 20050606) and I am wondering if the tomcat5 build fails due to a compiler bug. I am posting as much output as I could get from ant below. Let me know if any additional information is needed. build-webapps-precompile: [mkdir] Created dir: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build/server/webapps/admin/WEB-INF/src/admin [mkdir] Created dir: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build/webapps/ROOT/WEB-INF/src [mkdir] Created dir: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build/webapps/ROOT/WEB-INF/classes [mkdir] Created dir: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build/webapps/jsp-examples/WEB-INF/src dropping /usr/lib/jvm/lib/tools.jar from path as it doesn't exist [jasper2] log4j:WARN No appenders could be found for logger (org.apache.jasper.compiler.JspRuntimeContext). [jasper2] log4j:WARN Please initialize the log4j system properly. [jasper2] java.lang.NullPointerException [jasper2] at java.lang.Object.getClass() (/usr/lib/libgcj.so.6.0.0) [jasper2] at org.apache.jasper.compiler.TagFileProcessor.loadTagFile(org.apache.jasper.compiler.Compiler, java.lang.String, javax.servlet.jsp.tagext.TagInfo, org.apache.jasper.compiler.PageInfo) (Unknown Source) [jasper2] at org.apache.jasper.compiler.TagFileProcessor.access$0(org.apache.jasper.compiler.TagFileProcessor, org.apache.jasper.compiler.Compiler, java.lang.String, javax.servlet.jsp.tagext.TagInfo, org.apache.jasper.compiler.PageInfo) (Unknown Source) [jasper2] at org.apache.jasper.compiler.TagFileProcessor$TagFileLoaderVisitor.visit(org.apache.jasper.compiler.Node$CustomTag) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$CustomTag.accept(org.apache.jasper.compiler.Node$Visitor) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$Nodes.visit(org.apache.jasper.compiler.Node$Visitor) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$Visitor.visitBody(org.apache.jasper.compiler.Node) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$Visitor.visit(org.apache.jasper.compiler.Node$Root) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$Root.accept(org.apache.jasper.compiler.Node$Visitor) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Node$Nodes.visit(org.apache.jasper.compiler.Node$Visitor) (Unknown Source) [jasper2] at org.apache.jasper.compiler.TagFileProcessor.loadTagFiles(org.apache.jasper.compiler.Compiler, org.apache.jasper.compiler.Node$Nodes) (Unknown Source) [jasper2] at org.apache.jasper.compiler.Compiler.generateJava() (Unknown Source) [jasper2] at org.apache.jasper.compiler.Compiler.compile(boolean, boolean) (Unknown Source) [jasper2] at org.apache.jasper.JspC.processFile(java.lang.String) (Unknown Source) [jasper2] at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (/usr/lib/libgcj.so.6.0.0) [jasper2] at org.apache.jasper.JspC.execute() (Unknown Source) [jasper2] at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) [jasper2] at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) [jasper2] at org.apache.tools.ant.Task.perform() (Unknown Source) [jasper2] at org.apache.tools.ant.Target.execute() (Unknown Source) [jasper2] at org.apache.tools.ant.Target.performTasks() (Unknown Source) [jasper2] at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) [jasper2] at org.apache.tools.ant.taskdefs.Ant.execute() (Unknown Source) [jasper2] at org.apache.tools.ant.taskdefs.CallTarget.execute() (Unknown Source) [jasper2] Error in class org.apache.jasper.JspC [antcall] Exiting /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build.xml. BUILD FAILED /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build.xml:566: The following error occurred while executing this line: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build.xml:316: org.apache.jasper.JasperException at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(org.apache.tools.ant.BuildException, org.apache.tools.ant.Location) (Unknown Source) at org.apache.tools.ant.taskdefs.Ant.execute() (Unknown Source) at org.apache.tools.ant.taskdefs.CallTarget.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) at org.apache.tools.ant.Project.executeTargets(java.util.Vector) (Unknown Source) at org.apache.tools.ant.Main.runBuild(java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.Main.startAnt(java.lang.String[], java.util.Properties, java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.launch.Launcher.run(java.lang.String[]) (Unknown Source) at org.apache.tools.ant.launch.Launcher.main(java.lang.String[]) (Unknown Source) at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0) at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0) Caused by: /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build.xml:316: org.apache.jasper.JasperException at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) ...14 more Caused by: org.apache.jasper.JasperException at org.apache.jasper.JspC.processFile(java.lang.String) (Unknown Source) at org.apache.jasper.JspC.execute() (Unknown Source) at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (/usr/lib/libgcj.so.6.0.0) at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) ...19 more --- Nested Exception --- /home/david/rpm/BUILD/tomcat5-5.0.30/jakarta-tomcat-5.0.30-src/jakarta-tomcat-5/build.xml:316: org.apache.jasper.JasperException at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) at org.apache.tools.ant.taskdefs.Ant.execute() (Unknown Source) at org.apache.tools.ant.taskdefs.CallTarget.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) at org.apache.tools.ant.Project.executeTargets(java.util.Vector) (Unknown Source) at org.apache.tools.ant.Main.runBuild(java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.Main.startAnt(java.lang.String[], java.util.Properties, java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.launch.Launcher.run(java.lang.String[]) (Unknown Source) at org.apache.tools.ant.launch.Launcher.main(java.lang.String[]) (Unknown Source) at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0) at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0) Caused by: org.apache.jasper.JasperException at org.apache.jasper.JspC.processFile(java.lang.String) (Unknown Source) at org.apache.jasper.JspC.execute() (Unknown Source) at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (/usr/lib/libgcj.so.6.0.0) at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) ...19 more --- Nested Exception --- org.apache.jasper.JasperException at org.apache.jasper.JspC.processFile(java.lang.String) (Unknown Source) at org.apache.jasper.JspC.execute() (Unknown Source) at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (/usr/lib/libgcj.so.6.0.0) at org.apache.tools.ant.TaskAdapter.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) at org.apache.tools.ant.taskdefs.Ant.execute() (Unknown Source) at org.apache.tools.ant.taskdefs.CallTarget.execute() (Unknown Source) at org.apache.tools.ant.UnknownElement.execute() (Unknown Source) at org.apache.tools.ant.Task.perform() (Unknown Source) at org.apache.tools.ant.Target.execute() (Unknown Source) at org.apache.tools.ant.Target.performTasks() (Unknown Source) at org.apache.tools.ant.Project.executeTarget(java.lang.String) (Unknown Source) at org.apache.tools.ant.Project.executeTargets(java.util.Vector) (Unknown Source) at org.apache.tools.ant.Main.runBuild(java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.Main.startAnt(java.lang.String[], java.util.Properties, java.lang.ClassLoader) (Unknown Source) at org.apache.tools.ant.launch.Launcher.run(java.lang.String[]) (Unknown Source) at org.apache.tools.ant.launch.Launcher.main(java.lang.String[]) (Unknown Source) at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0) at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0) -- Sincerely, David Walluck <david(a)zarb.org> ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Which JVM is faster
by C.F. Scheidecker Antunes 27 Jul '05

27 Jul '05

Hello all, Is there any benchmark comparison between JVMs? I wonder if the one that comes with FC4 is as fast or faster and if it is 100% compatible with all java apps. Any thoughts on that? Thanks, C.F.

5 5

Re: Odd ClassNotFoundException with RSSOwl
by Andrew Overholt 27 Jul '05

27 Jul '05

* Benjamin Pasero <bpasero(a)rssowl.org> [2005-07-26 15:04]: > > I see. Unfortunately I will not be able to remove the dependency from JFace > as well as I did with forms. It is too heavily used in all the Dialogs. That's okay. I think for now I'm okay with having the runtime requirement on eclipse-platform. The sooner we get this out, the better IMHO. Left to do: 1) get necessary packages either created with JPackage and/or imported (preferably with aot-compile-rpm) into FE, 2) get RSSOwl built into FE and test. Andrew

3 3

jpackage.org and FC4
by John M. Gabriele 27 Jul '05

27 Jul '05

I just installed Fedora Core 4, and happily, it seems to have all the Java packages already installed for me and ready to go (during the install I selected the Java and Eclipse packages, and also dev tools packages). Then, later, I noticed this site: http://jpackage.org/ They seem to have many of the same packages that already come with FC4, and they're rpm's too. At first I assumed that jpackage.org must be for other rpm-based distros besides Fedora, but then I came across this article: http://fedoranews.org/mediawiki/index.php/JPackage_Java_for_FC4 by Paul Howarth. It says: | | Fedora Core 4 users should use either the RPM from jpackage.org | or manually install the Sun Java tarball into /opt. Sun Java 1.5+ | is recommended for stability purposes. | What are they talking about? FC4 already comes with Java: [john@localhost ~]$ yum list | grep gcj java-1.4.2-gcj-compat.i386 1.4.2.0-40jpp_31rh.FC4 installed java-1.4.2-gcj-compat-devel.i386 1.4.2.0-40jpp_31rh.FC4 installed java-1.4.2-gcj-compat-src.i386 1.4.2.0-40jpp_31rh.FC4 installed libgcj.i386 4.0.0-8 installed libgcj-devel.i386 4.0.0-8 installed libgcj-src.i386 4.0.0-8 installed java-1.4.2-gcj-compat-debuginfo.i386 1.4.2.0-40jpp_31rh.FC4 updates-released Why would I install Java from jpackage.org when it already comes with FC4 and works right OOTB? Should FC4 users be using *any* packages from jpackage.org? Thanks, ---John ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

10 31

Re: Odd ClassNotFoundException with RSSOwl
by Andrew Overholt 26 Jul '05

26 Jul '05

(I'm sorry, for some reason I didn't CC the list with this mail, either) * Benjamin Pasero <bpasero(a)rssowl.org> [2005-07-25 18:02]: > > > >That won't really work unless we can patch FC's JFace build stuff to allow > >the JFace jar in the system to have the same dependency removed. But it's > >a good step forward. > [...] > Hm, but if I supply a jface.jar that is compiled into RSSOwl jar, that does > not have any dependency to Eclipse anymore, doesn't that help? Or is there > another JFace on the Classpath on FC, that is used first, before looking > into RSSOwl's one? We've already got JFace in FC so we should be using it where we can. We need to be able to build all the code we ship from source. What I've done in the specfile I posted is to patch the build.xml to not explode the jars that we have RPMs for already (we will have to make this all jars before we can put this into Fedora Extras) and just tack those onto the classpath for the java command. I tried in vain to get MANIFEST.MF to include the jars in the system on its "Class-Path" line, but eventually gave up and went back to the java -cp <blah> net.sourceforge... in /usr/bin/rssowl. It would be nice if we could find some way for both you (upstream) and us (downstream) to use the same build.xml but I'm content with maintaining our own rssowl script for running (since you don't have one upstream and it's so small) and patching out the unjarring of the jars from other packages. Andrew

1 0

New Health Plan - Only $85 a Month
by American Medical 25 Jul '05

25 Jul '05

1 0

Odd ClassNotFoundException with RSSOwl
by Andrew Overholt 25 Jul '05

25 Jul '05

Hi, Ben Pasero was kind enough to create an RSSOwl release for me with the Eclipse dependency removed (ie. it just depends upon SWT). I built this code against our SWT RPMs but I'm getting weird errors while running. For example, if I put in Slashdot's RSS feed into the location bar, it will load the headlines fine but fail when I click on one to get the actual story. This is what I'm doing: gij -cp /usr/share/eclipse/plugins/org.eclipse.core.runtime_3.1.0.jar:/home/overholt/rssowl/BlowfishJ.jar:/home/overholt/rssowl/codec-1.3.jar:/home/overholt/rssowl/httpclient-3.0.jar:/home/overholt/rssowl/iTextAsian.jar:/home/overholt/rssowl/itext.jar:/home/overholt/rssowl/jdom.jar:/home/overholt/rssowl/jface.jar:/home/overholt/rssowl/logging-1.0.4.jar:/home/overholt/rssowl/res.jar:/home/overholt/rssowl/swt.jar:/home/overholt/rssowl/swt-nl.jar:/home/overholt/rssowl/xerces.jar -jar rssowl.jar (with Sun's JVM, I just have to add -Djava.library.path=/usr/lib). The error I get is: Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.Status not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:rssowl.jar,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}} at java.net.URLClassLoader.findClass(java.lang.String) (/usr/lib/libgcj.so.6.0.0) at java.lang.ClassLoader.loadClass(java.lang.String, boolean) (/usr/lib/libgcj.so.6.0.0) at java.lang.ClassLoader.loadClass(java.lang.String) (/usr/lib/libgcj.so.6.0.0) ...19 more and with Sun's stuff: Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IStatus at net.sourceforge.rssowl.controller.dialog.ValidateFeedDialog.createDialogArea(Unknown Source) at net.sourceforge.rssowl.controller.dialog.ValidateFeedDialog.<init>(Unknown Source) at net.sourceforge.rssowl.controller.EventManager.actionValidateFeeds(Unknown Source) at net.sourceforge.rssowl.controller.panel.ErrorPanel$2.widgetSelected(Unknown Source) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1021) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2867) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2572) at net.sourceforge.rssowl.controller.GUI.runEventLoop(Unknown Source) at net.sourceforge.rssowl.controller.GUI.showGui(Unknown Source) at net.sourceforge.rssowl.controller.RSSOwlLoader.<init>(Unknown Source) at net.sourceforge.rssowl.controller.RSSOwlLoader.main(Unknown Source) Both classes that are apparently not found are in the first jar on the classpath. Any ideas? I've put the jars here: http://overholt.ca/rssowl.tar.bz2 Andrew

4 4

Learning java?
by Justin Conover 23 Jul '05

23 Jul '05

Are books like: Sams Teach Yourself Java in 24 hours Head First Java Good books to start out in Java?

2 1

quick and dirty Expect-fu to help manage "java" and "javac" alternatives
by Vadim Nasardinov 22 Jul '05

22 Jul '05

There is a mildly annoying gotcha in the way FC4 manages the "java" and "javac" alternatives. (To be fair, FC4 is merely following the JPackage suit here.) The way it works is this. If you install another JDK in addition to GCJ, you have a choice of specifying your preferred alternative systemwide like so: | $ readlink -f /usr/bin/java | /usr/bin/gij | $ sudo /usr/sbin/alternatives --config java | | There are 2 programs which provide 'java'. | | Selection Command | ----------------------------------------------- | + 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java | * 2 /usr/lib/jvm/jre-1.4.2-sun/bin/java | | Enter to keep the current selection[+], or type selection number: 2 | $ readlink -f /usr/bin/java | /usr/lib/jvm/java-1.4.2-sun-1.4.2.08/jre/bin/java Here's the rub. If you do this, you must remember to also change the "javac" alternative. (In some cases, you may not care if your /usr/bin/java and /usr/bin/javac are provided by different vendors. In most cases, you probably want to be consistent.) I wrote a script to change both "java" and "javac" alternatives in one fell swoop. Here's how it works: | $ sudo ./alt-java | spawn /usr/sbin/alternatives --config java | | There are 2 programs which provide 'java'. | | Selection Command | ----------------------------------------------- | 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java | *+ 2 /usr/lib/jvm/jre-1.4.2-sun/bin/java | | Enter to keep the current selection[+], or type selection number: 1 | 1 | spawn /usr/sbin/alternatives --config javac | | There are 2 programs which provide 'javac'. | | Selection Command | ----------------------------------------------- | 1 /usr/lib/jvm/java-1.4.2-gcj/bin/javac | *+ 2 /usr/lib/jvm/java-1.4.2-sun/bin/javac | | Enter to keep the current selection[+], or type selection number: 1 I am attaching the script in hopes that someone else will find it useful. ------------------------------------------------------------------------------

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java-devel July 2005