Arch Linux User Repository

Thank you so much for the quick update, BlueJ is my favorite environment that I use for learning this language together with the Object first with Java book. Hopefully in future versions the authors will abandon Java 11 and use the newer Java 17 LTS.

Updated version. Thanks @krouziciorel for letting me know.

On the newest version I had to change the -Xmx parameter of archlinux-java-run to something higher (I used 1024M) otherwise bluej wouldn't start ("malloc(): corrupted top size"). Not sure whether that's just me but thought I'd let you know, maybe it helps someone.

Upgraded to new version. Please let me know if there are any issues.

Besides all the fixes/improvements suggested, there is a new upstream version: https://www.bluej.org/download/files/BlueJ-linux-500.deb

I flagged it out of date and requested to orphan the package, cause I would like to continue maintaining it, if @chetgurevitch wont.

Application works, but many of its pop-up dialogs have zero size, showing up as just a vertical line. Doesn't happen for "Open Editor" and such, but for "Delete" on a class, "Tools > Teams > Checkout Project", and various important functionality this happens. Weirdly it sometimes randomly works, but I have yet to figure out the pattern.

Any ideas?

Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application

Although It is installed. Java-13-OpenJDK, Java-11-OpenJDK, both give same error. Could anyone help please?

To be able to have bluej automatically open when clicked on project.bluej file, please add a mime type. I realized it with following additions:

I included a bluej.install with following content:

post_install() {
    if test -x /usr/bin/update-mime-database usr/share/mime &> /dev/null; then update-mime-database usr/share/mime &> /dev/null; fi
}

post_upgrade() {
    post_install
}

pre_remove() {
    if test -x /usr/bin/update-mime-database usr/share/mime &> /dev/null; then update-mime-database usr/share/mime &> /dev/null; fi
}

Added bluej.xml

<?xml version="1.0" encoding="UTF-8"?>
 <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
  <mime-type type="application/x-bluej.package">
         <comment>BlueJ Package</comment>
         <comment xml:lang="de">BlueJ Paket</comment>
         <glob pattern="*.bluej"/>
  </mime-type>
</mime-info>

And changed bluej.desktop

[Desktop Entry]
Encoding=UTF-8
Version=1.0
Name=BlueJ
Comment=A simple powerful Java IDE
Categories=Application;Development;
Exec=bluej %u
MimeType=application/x-bluej.package;
Icon=bluej
Terminal=false
Type=Application
StartupWMClass=bluej.Boot$App

And finally updated source and sha256sums lines in PKGBUILD and added:

install -Dm644 "${pkgname}.xml" "${pkgdir}/usr/share/mime/packages/${pkgname}.xml"

I just installed the package on arch linux running the 5.3.11 kernel, however no fonts are being rendered in the program. If I hover around the header I can see submenus however none of the text is being rendered.

[ SOLVED ] Up to now, I tried several (re-)installs with regard to java/javafx under Manjaro - no success. I (still) receive the following errors when starting BlueJ:

https://pastebin.com/GtvcBH7Y

Any ideas? Help really appreciated!!

Starting from scratch, re-installing all dependencies, BlueJ runs again.

I thought I was stuck but Jakobchs comment helped me out. Apparently if BlueJ seems to be stuck loading it opens another window where you need to confirm something but the windows is too small to see something and not resizable. Just hit enter.

@chetgurevitch Thank you for your quick reply and help. Unfortunately, I couldn't figure out anything I could install additionally or change. I posted the output of

$ pacman -Fl java11-openjfx on https://pastebin.com/DzGu8qJ3

and $ archlinux-java status results in

java-11-openjdk java-12-jdk (default) java-13-openjdk java-8-jre/jre

(as written in my first post)

The installed Bluej-Version is 4.2.2-1.

Appreciate your help!

@chromanju can't reproduce, make sure you're using the latest PKGBUILDs (4.2.1-5 and 3.6.0-3), you have java11-openjfx installed, and your system is fully up to date. If you're still experiencing the issue please post the output of

$ pacman -Fl java11-openjfx

and

$ archlinux-java status

edit: about to update bluej to 4.2.2, would be best if you could test with this version

BlueJ still won't start resulting in these error(s); help required: xception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802)

BTW: same problem with greenfoot at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) at bluej.Boot.main(Boot.java:202) Caused by: java.lang.ClassNotFoundException: javafx.application.Application at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)

Installed java-versions: java-11-openjdk, java-12-jdk (default), java-13-openjdk, java-8-jre/jre

BTW: similar problem with greenfoot

Bluej gets stuck in loading screen and is not responding when I try to open it. I had bluej installed before the 3 latest updates, where it worked fine.

Terminal output: (java:10299): Gdk-WARNING **: 10:34:56.196: XSetErrorHandler() called with a GDK error trap pushed. Don't do that.

Edit: Never mind. You just need to smash some random keys, when it is stuck on loading screen for bluej to open.

this tries to install java11-openjfx which conflicts then with java-openjfx-bin which already provides java-openjfx=11.0.2

I load the testing openjfx and now I get: (java:4580): Gdk-WARNING **: 10:44:16.937: XSetErrorHandler() called with a GDK error trap pushed. Don't do that.

There's an update to the java11-openjfx package in the testing repo that changes the location. I've pushed another update that allows it to fall back to the old location.

I have the same problem in a new installation.

Still the same problem; help required. Terminal output for /usr/bin/bluej

Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) at bluej.Boot.main(Boot.java:202) Caused by: java.lang.ClassNotFoundException: javafx.application.Application at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ... 10 more

One more small update, you should now be able to use javafx in projects.

Thanks to the javafx packaging getting sorted out in the repos and the archlinux-java-run script, the latest version should just work™ regardless of what archlinux-java is set to.

It was a problem on my end. The _JAVA_OPTIONS= were set with some weird configs. After I erased it the program started. Hope it helps someone.

Works for me with java-11-openjdk and jdk-11.0.4 from https://bell-sw.com/.

With java-11-openjdk, however, I cannot run JavaFX applications since JavaFX is not (no longer) included. The error message is: java.lang.NoClassDefFoundError: javafx/appjava.lang.NoClassDefFoundError: javafx/application/Preloader

With the jdk-11.0.4 from https://bell-sw.com/ JavaFX applications start fine.

Perhaps it would be wise to add no jdk dependencies at all and leave the choice up to the user. In my case, I just extract the jdk from https://bell-sw.com/ into /usr/lib/jvm, then run 'sudo archlinux-java set jdk-11.0.4' and BlueJ works fully, even with JavaFX applications.

Same as @muesli4. Just get the loading screen and then it hangs.

Doesn't work for me. By default I get the same as @hemicepha. When I run:

sudo archlinux-java set java-11-openjdk

I just get the loading screen and nothing happens. It is stuck.

I guess the first 2 lines in bluej execute are inappropriate. Because "archlinux-java get" will get the name of default JRE/JDK folder directly, there is no need to get the major version number of currently installed java lib.

The jdk-openjdk package contains the java-12-openjdk version and it looks like bluej can't use it yet:

Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application
        at java.base/java.lang.ClassLoader.defineClass1(Native Method)
        at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
        at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
        at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802)
        at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.ja
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        at bluej.Boot.main(Boot.java:202)
Caused by: java.lang.ClassNotFoundException: javafx.application.Application
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/

You have to manually install jdk11-openjdk and set it as default sudo archlinux-java set java-11-openjdk

[SOLVED] For solving the java version problem you must have installed the jdk-openjdk package and run:

sudo archlinux-java set java-11-openjdk

Regards.

I tried 4.2.0 and 4.2.1 both didn't work. I installed openjfx and all java stuff but i am getting this error: Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: bluej/Boot has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Edit: With the command above it just works fine. Thank you for your help.

@Fuxy you need java-openjfx-bin from the aur.

@auslaander did you make sure jdk11 was the default with archlinux-java?

If you did and it still didn't work could you try running bluej from the terminal and attach the output?

I'm getting "error: target not found: java-openjfx>=11" when i try to build the latest version.

Any plans to get that dependency updated?

Otherwise as @auslaander said the only option is to stick to the install and older version.

4.20 didnt work for me aswell, I tried everything but then I tried 4.14 with jdk8 and it worked instantly.. so if you dont really need the latest version go for the last version without jdk11

If you want to try 420. Install java-openjfx-bin from aur. Edit the PKGBUILD to use 4.2.0 as pkg_ver and SKIP sha256sum(or update them) Edit /usr/bin/bluej to include openjfx libraries in -cp flag. eg. https://pastebin.com/mggNC17g

Should work. The menu is buggy on xorg/i3, not sure about other DE's.

Just to let everyone know I'm waiting on openjfx packaging for java 11 to get resolved before updating the package.

The current version requires Java 8. BlueJ 4.2.0 is expected to support JDK 11. See: https://www.bluej.org/faq.html#bluej-with-java-9-plus

Okay, this doesn't work with JDK10 or JDK7, but it does work with JDK8. I didn't check JDK9. Please fix the package.

$ bluej

Exception in thread "main" java.lang.NoClassDefFoundError:

javafx/application/Application at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1009) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:801) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:699) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:622) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) at bluej.Boot.main(Boot.java:193) Caused by: java.lang.ClassNotFoundException: javafx.application.Application at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) ... 10 more

If someone wants to upgarde this, here's the PKGBUILD: https://pastebin.com/fMykQhKQ (with checksums updated) No more cahnges are neccessary for v4.1.3

Hello, i think that version 4.1.2 of BlueJ is outdated as of 2018-09-07. I would be really happy if someone could update this to the latest version 4.1.3 (Probably doesn't even need PKGBUILD changes, just version). The .deb package can be found here: https://bluej.org/download/files/BlueJ-linux-413.deb And the source code can be found here: https://bluej.org/download/files/source/BlueJ-source-413.zip Aswell as the .jar installer here: https://bluej.org/download/files/BlueJ-generic-413.jar Thanks for your attention in advance!

Hi you all. Bluej is not opening. The very first load window (the one showing the companies supporting Bluej) never closes and nothing happens... Intellij community version is working fine, but it's so heavy... I think Bluej would fit my learning purposes better.

@chetgurevitch You're awesome. Thanks for the update! I've installed jdk-8-openjdk and java-openjfx and switched environments with 'archlinux-java set'. The configuration works. Probably I've really forgotten to install openjfx.

@teacher4711 thanks, updated bluej and greenfoot with fixes. As for the crashes are you sure java-openjfx is installed? The jdk8 package for example will satisfy that dependency meaning java-openjfx needs to be installed manually for use with openjdk.

OK, found the solution myself. Perhaps the following code can be incorporated into the bluej file to make the documentation view work:

!/bin/sh

APPBASE="/opt/bluej/"

JAVAPATH="/usr/lib/jvm/java-8-jdk"

CP="$APPBASE/bluej.jar:$JAVAPATH/lib/tools.jar"

"$JAVAPATH/bin/java" -Dawt.useSystemAAFontSettings=on -cp "$CP" bluej.Boot

"$@"

Hi. What must I do to get the javadoc, i. e. the documentation view, working? When switching from "Source View" to "Documentation" I get an error message: "Javadoc reported an error ...". The generated logfile says: "javadoc: error - Cannot find doclet class com.sun.tools.doclets.standard.Standard".

When I run the jar-version of BlueJ, I can switch between Source View and Documentation flawlessly.

I run BlueJ (latest version) with jdk8 (the proprietary version of Java) since the openjdk version crashes (on all of my systems). I've also installed jdk8-docs.

I'd appreciate if someone could help. Thanks in advance. Michael