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• Can't upgrade my Ubuntu server, it gets stuck on openjdk-6-jre-headless

  - by Jean-Nicolas Boulay Desjardins

  I am using Ubuntu Server. When I do: apt-get upgrade it gets stuck on: Setting up openjdk-6-jre-headless (6b20-1.9.7-0ubuntu1) ... Why? And what can I do to stop it? I tried removing it with apt-get... I get this error: E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. So then I tried this: dpkg --purge openjdk-6-jre-headless I got this: dpkg: dependency problems prevent removal of openjdk-6-jre-headless: openjdk-6-jre-lib depends on openjdk-6-jre-headless (>= 6b17). ca-certificates-java depends on openjdk-6-jre-headless (>= 6b16-1.6.1-2) | java6-runtime-headless; however: Package openjdk-6-jre-headless is to be removed. Package java6-runtime-headless is not installed. Package openjdk-6-jre-headless which provides java6-runtime-headless is to be removed. ca-certificates-java depends on openjdk-6-jre-headless (>= 6b16-1.6.1-2) | java6-runtime-headless; however: Package openjdk-6-jre-headless is to be removed. Package java6-runtime-headless is not installed. Package openjdk-6-jre-headless which provides java6-runtime-headless is to be removed. dpkg: error processing openjdk-6-jre-headless (--purge): dependency problems - not removing Errors were encountered while processing: openjdk-6-jre-headless The thing is I think my DB is using it... Not sure... I am using Cassandra with Thrift... Yes, it's getting a bit more complex... # dpkg --configure -a I get: dpkg: dependency problems prevent configuration of openjdk-6-jre: openjdk-6-jre depends on openjdk-6-jre-headless (>= 6b20-1.9.7-0ubuntu1); however: Package openjdk-6-jre-headless is not configured yet. dpkg: error processing openjdk-6-jre (--configure): dependency problems - leaving unconfigured Processing triggers for libc-bin ... ldconfig deferred processing now taking place dpkg: dependency problems prevent configuration of libaccess-bridge-java: libaccess-bridge-java depends on default-jre | openjdk-6-jre | sun-java6-jre; however: Package default-jre is not installed. Package openjdk-6-jre is not configured yet. Package sun-java6-jre is not installed. dpkg: error processing libaccess-bridge-java (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of icedtea-6-jre-cacao: icedtea-6-jre-cacao depends on openjdk-6-jre-headless (= 6b20-1.9.7-0ubuntu1); however: Package openjdk-6-jre-headless is not configured yet. dpkg: error processing icedtea-6-jre-cacao (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libaccess-bridge-java-jni: libaccess-bridge-java-jni depends on libaccess-bridge-java (>= 1.26.2-5); however: Package libaccess-bridge-java is not configured yet. dpkg: error processing libaccess-bridge-java-jni (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: openjdk-6-jre libaccess-bridge-java icedtea-6-jre-cacao libaccess-bridge-java-jni Thanks again for any help.

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• Not able to install java in ubuntu 9.10

  - by piemesons

  Error i am getting:-- E: I wasn't able to locate a file for the sun-java6-bin package. This might mean you need to manually fix this package. (due to missing arch) then a blue dialog box appears with OK (Which is not clickable and pressing enter is not workin.) EDIT sudo dpkg --configure -a sudo aptitude clean sudo aptitude update sudo aptitude dist-upgrade sudo aptitude install sun-java6-jre sun-java6-plugin sun-java6-fonts Tried this but still not working... same problem.

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• How to repair Java in Ubuntu after trying to switch to Java 6 using update-java-alternatives

  - by Kau-Boy

  I tried to switch from Java 5 to Java 6 using the "update-java-alternatives" command like explained on this page: https://help.ubuntu.com/community/Java But afterwards I get the following error when I tried to execute java: root@webserver:~# java Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. I also tried to reinstall the java binaries using "apt-get" but I didn't succeed reinstalling it. I would like to post the "apt-get" errors, but unfortunately I don't know how to print out the error messages in English and not in German. My system is a Ubuntu 8.04 ROOT server. Here is the (Google translated) english text tring to install Java 6 again: root@server:~# apt-get install sun-java6-jdk Reading package lists ... Ready Dependency tree Reading state information ... Ready sun-java6-jdk is already the newest version. sun-java6-jdk set to manually installed. 0 upgraded, 0 newly installed, 0 to remove and 86 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Set up a sun-java6-bin (6-03-0ubuntu2) ... Could not create the Java virtual machine. dpkg: error processing sun-java6-bin (- configure): Subprocess post-installation script returned error exit status 1 Errors were encountered while processing: sun-java6-bin E: Sub-process / usr / bin / dpkg returned an error code (1) I hope that this might help you helping me.

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• How to ACTUALLY install Java on Linux?

  - by Camran

  I have a Ubuntu Server. From the terminal, how should I install JDK? In this guide it says to use this command: sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk But on Suns website, it says JDK includes the JRE, so why the JRE in the line above? Anybody know how to actually install Java? Every guide and every forum shows different ways of doing it. BTW: It is a VPS (virtual private server) Thanks

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• How to ACTUALLY install Java on Linux?

  - by Camran

  I have a Ubuntu Server. From the terminal, how should I install JDK? In this guide it says to use this command: sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk But on Suns website, it says JDK includes the JRE, so why the JRE in the line above? Anybody know how to actually install Java? Every guide and every forum shows different ways of doing it. BTW: It is a VPS (virtual private server) Thanks

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• How to ACTUALLY install Java on Linux?

  - by Camran

  I have a Ubuntu Server. From the terminal, how should I install JDK? In this guide it says to use this command: sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk But on Suns website, it says JDK includes the JRE, so why the JRE in the line above? Anybody know how to actually install Java? Every guide and every forum shows different ways of doing it. BTW: It is a VPS (virtual private server) Thanks

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• Developing my own package manager: how do I resolve dependencies?

  - by shantanu

  According to debian control file ant package's dependency list is: Depends: default-jre-headless | java2-runtime-headless | java5-runtime-headless | java6-runtime-headless, libxerces2-java That means it depends on default-jre-headless or java2-runtime-headless or java5-runtime-headless or java6-runtime-headless. But how could i determine that which package need to select as dependency? Note: I am trying to develop a package manager. I can not use provided package because they read sources.list file from a specific directory.

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• Remote Scripted Installation of Sun/Oracle JRE

  - by chrisbunney

  I'm attempting to automate the installation of a Debian server (debian 6.0 squeeze 64bit). Part of the installation requires the Sun JRE package to be installed. This package has a licence agreement, which has to be accepted. I have a script which uses the following lines to accept and install the JRE: echo "sun-java6-bin shared/accepted-sun-dlj-v1-1 boolean true" | debconf-set-selections apt-get install -y sun-java6-jre This works fine when executing the script locally. However, I need to execute the script remotely using the ssh command, e.g.: ssh -i keyFile root@hostname './myScript' This doesn't work. In particular, it fails on apt-get install -y sun-java6-jre. It would seem that in spite of me setting the licence agreement to accepted, when run remotely in this manner it is ignored. Despite setting the value to true, I still get prompted to manually accept the agreement when I run this command: ssh -i keyFile root@hostname 'apt-get install -y sun-java6-jre' I suspect it is something to do with environment that is taken care of when running a proper terminal session, but have no idea what to try next to fix it. So, what do I have to do to get this command (and hence my deployment script) to run correctly when executing it remotely? Or is there an alternative way that allows me to install the JRE remotely by another means? Edit 0: I have compared the output of env when executed remotely via ssh and when executed via a local terminal session. The only difference between the outputs is that the local terminal session has the additional value TERM=xterm.

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• repair broken packages-"dpkg: error: conflicting actions -f (--field) and -r (--remove)"

  - by yinon

  Ubuntu 12.04 LTS. if more information will be needed, tell me and'll give. the main problem is: tzach@tzach-pc:~$ sudo apt-get install docky [sudo] password for tzach: Reading package lists... Done Building dependency tree Reading state information... Done docky is already the newest version. You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: ca-certificates-java : Depends: openjdk-6-jre-headless (>= 6b16-1.6.1-2) but it is not going to be installed or java6-runtime-headless openjdk-7-jre-lib : Depends: openjdk-7-jre-headless (>= 7~b130~pre0) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). tzach@tzach-pc:~$ and also: tzach@tzach-pc:~$ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. **The following packages have unmet dependencies: ca-certificates-java : Depends: openjdk-6-jre-headless (>= 6b16-1.6.1-2) but it is not installed or java6-runtime-headless openjdk-7-jre-lib : Depends: openjdk-7-jre-headless (>= 7~b130~pre0) but it is not installed E: Unmet dependencies. Try using ******* so we tryied the guide here in messege #9: http://ubuntuforums.org/showthread.php?t=947124 we run all the first 4 commands and the last one-"sudo apt-get autoremove" gave us: tzach@tzach-pc:~$ sudo apt-get autoremove Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: **ca-certificates-java** : Depends: openjdk-6-jre-headless (>= 6b16-1.6.1-2) but it is not installed or java6-runtime-headless **openjdk-7-jre-lib** : Depends: openjdk-7-jre-headless (>= 7~b130~pre0) but it is not installed E: Unmet dependencies. Try using -f. so we run the last command twice: sudo dpkg --remove -force --force-remove-reinstreq ca-certificates-java and sudo dpkg --remove -force --force-remove-reinstreq openjdk-7-jre-lib but both of them gives: tzach@tzach-pc:~$ sudo dpkg --remove -force --force-remove-reinstreq ca-certificates-java [sudo] password for tzach: dpkg: error: conflicting actions -f (--field) and -r (--remove) Type dpkg --help for help about installing and deinstalling packages [*]; Use `dselect' or `aptitude' for user-friendly package management; Type dpkg -Dhelp for a list of dpkg debug flag values; Type dpkg --force-help for a list of forcing options; Type dpkg-deb --help for help about manipulating *.deb files; Options marked [*] produce a lot of output - pipe it through `less' or `more' ! EDIT FOR green7-output of "sudo apt-get -f install": tzach@tzach-pc:~$ sudo apt-get -f install [sudo] password for tzach: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: icedtea-7-jre-cacao icedtea-7-jre-jamvm java-common openjdk-7-jre-headless tzdata-java Suggested packages: default-jre equivs sun-java6-fonts ttf-dejavu-extra fonts-ipafont-gothic fonts-ipafont-mincho ttf-telugu-fonts ttf-oriya-fonts ttf-kannada-fonts ttf-bengali-fonts The following packages will be REMOVED: ttf-mscorefonts-installer The following NEW packages will be installed: icedtea-7-jre-cacao icedtea-7-jre-jamvm java-common openjdk-7-jre-headless tzdata-java 0 upgraded, 5 newly installed, 1 to remove and 355 not upgraded. 5 not fully installed or removed. Need to get 0 B/29.6 MB of archives. After this operation, 88.5 MB of additional disk space will be used. Do you want to continue [Y/n]? y debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable dpkg: warning: there's no installed package matching ttf-mscorefonts-installer:amd64 Setting up tzdata (2012e-0ubuntu0.12.04) ... debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable dpkg: error processing tzdata (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Errors were encountered while processing: tzdata E: Sub-process /usr/bin/dpkg returned an error code (1) EDIT2 FOR green7: tzach@tzach-pc:~$ sudo apt-get remove --purge tzdata [sudo] password for tzach: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: ca-certificates-java : Depends: openjdk-6-jre-headless (>= 6b16-1.6.1-2) but it is not going to be installed or java6-runtime-headless libc6 : Depends: tzdata but it is not going to be installed libc6:i386 : Depends: tzdata:i386 libical0 : Depends: tzdata but it is not going to be installed openjdk-7-jre-lib : Depends: openjdk-7-jre-headless (>= 7~b130~pre0) but it is not going to be installed python-dateutil : Depends: tzdata but it is not going to be installed ubuntu-minimal : Depends: tzdata but it is not going to be installed util-linux : Depends: tzdata (>= 2006c-2) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). EDIT3 FOR green7: tzach@tzach-pc:~$ sudo apt-get install openjdk-7-jre-headless [sudo] password for tzach: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: openjdk-7-jre-headless : Depends: tzdata-java but it is not going to be installed Depends: java-common (>= 0.28) but it is not going to be installed Recommends: icedtea-7-jre-cacao (= 7~u3-2.1.1~pre1-1ubuntu3) but it is not going to be installed Recommends: icedtea-7-jre-jamvm (= 7~u3-2.1.1~pre1-1ubuntu3) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). some things in the text also supposed to be bolded. but not critic (: Thanks for the editing! Thanks a lot for your assistance.

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• can't install sun jdk on ubuntu karmic 9.10

  - by pstanton

  i've just started using a new ec2 install of ubuntu karmic 9.10 and my first task was to install the jdk. when running apt-get install sun-java6-jdk i get the following: Reading package lists... Done Building dependency tree Reading state information... Done Package sun-java6-jdk is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package sun-java6-jdk has no installation candidate i've tried apt-get update as well as adding deb http://us.archive.ubuntu.com/ubuntu/ karmic universe to /etc/apt/sources.list any ideas fellas?

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• How do I install the latest Sun Java JRE on Ubuntu Server 9.10?

  - by blackrobot

  Unfortunately, if I try to install sun-java via apt-get, it's not found in the repositories. # apt-get install sun-java6-jre Reading package lists... Done Building dependency tree Reading state information... Done Package sun-java6-jre is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package sun-java6-jre has no installation candidate If I try to install it using the bin from Sun's website, here's the issue: # ./jre-6u18-linux-i586.bin (license agreement...) Do you agree to the above license terms? [yes or no] yes Unpacking... Checksumming... Extracting... ./jre-6u18-linux-i586.bin: 366: ./install.sfx.10648: not found Failed to extract the files. Please refer to the Troubleshooting section of the Installation Instructions on the download page for more information. Thanks for the help.

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• Error installing Java on Ubuntu Server

  - by Camran

  I get this error almost when installation is finished: /proc is not mounted; some java apps may fail Could not create the Java virtual machine. Error occurred during initialization of VM Could not reserve enough space for object heap Ignoring error generating classes.jsa Why is this? I just entered sudo apt-get install sun-java6-jre sun-java6-plugin sun-java6-fonts Is there something I must do first? What is Proc? If you need more input let me know. Thanks

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• Cannot install openjdk on Hardy Heron

  - by infaustus

  I know that Hardy Heron is very old but don't ask why Hardy... I've tried root@vz10931:/etc/apt# apt-get install openjdk-6-jre Reading package lists... Done Building dependency tree Reading state information... Done You might want to run `apt-get -f install' to correct these: The following packages have unmet dependencies: openjdk-6-jre: Depends: libasound2 (> 1.0.14) but it is not going to be installed Depends: libgif4 (>= 4.1.6) but it is not going to be installed Depends: libxtst6 but it is not going to be installed Depends: openjdk-6-jre-headless (>= 6b18-1.8.3-0ubuntu1~8.04.2) but it is not going to be installed vim: Depends: vim-common (= 1:7.1-138+1ubuntu3.1) but 2:7.3.154+hg~74503f6ee649-2ubuntu3 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). My sources.list deb http://pl.archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse deb-src http://pl.archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse deb http://pl.archive.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse deb-src http://pl.archive.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse deb http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse And root@vz10931:/etc/apt# ls -l sources.list.d/ total 0 Please help. When I've tried apt-get install -f I had install new system because everything crashed. Edit: I checked that i have openjdk installed root@vz10931:/var/www/mailer# dpkg --list | grep java iU sun-java6-bin 6.24-1build0.8.04.1 Sun Java(TM) Runtime Environment (JRE) 6 (ar iU sun-java6-jdk 6.24-1build0.8.04.1 Sun Java(TM) Development Kit (JDK) 6 iU sun-java6-jre 6.24-1build0.8.04.1 Sun Java(TM) Runtime Environment (JRE) 6 (ar but when i am trying to start java file: java -jar program.jar error appear -bash: java: command not found

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• Juggling with JDKs on Apple OS X

  - by Blueberry Coder

  I recently got a shiny new MacBook Pro to help me support our ADF Mobile customers. It is really a wonderful piece of hardware, although I am still adjusting to Apple's peculiar keyboard layout. Did you know, for example, that the « delete » key actually performs a « backspace »? But I disgress... As you may know, ADF Mobile development still requires JDeveloper 11gR2, which in turn runs on Java 6. On the other hand, JDeveloper 12c needs JDK 7. I wanted to install both versions, and wasn't sure how to do it.   If you remember, I explained in a previous blog entry how to install JDeveloper 11gR2 on Apple's OS X. The trick was to use the /usr/libexec/java_home command in order to invoke the proper JDK. In this case, I could have done the same thing; the two JDKs can coexist without any problems, since they install in completely different locations. But I wanted more than just installing JDeveloper. I wanted to be able to select my JDK when using the command line as well. On Windows, this is easy, since I keep all my JDKs in a central location. I simply have to move to the appropriate folder or type the folder name in the command I want to execute. Problem is, on OS X, the paths to the JDKs are... let's say convoluted.  Here is the one for Java 6. /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home The Java 7 path is not better, just different. /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home Intuitive, isn't it? Clearly, I needed something better... On OS X, the default command shell is bash. It is possible to configure the shell environment by creating a file named « .profile » in a user's home folder. Thus, I created such a file and put the following inside: export JAVA_7_HOME=$(/usr/libexec/java_home -v1.7) export JAVA_6_HOME=$(/usr/libexec/java_home -v1.6) export JAVA_HOME=$JAVA_7_HOME alias java6='export JAVA_HOME=$JAVA_6_HOME' alias java7='export JAVA_HOME=$JAVA_7_HOME'  The first two lines retrieve the current paths for Java 7 and Java 6 and store them in two environment variables. The third line marks Java 7 as the default. The last two lines create command aliases. Thus, when I type java6, the value for JAVA_HOME is set to JAVA_6_HOME, for example.  I now have an environment which works even better than the one I have on Windows, since I can change my active JDK on a whim. Here a sample, fresh from my terminal window. fdesbien-mac:~ fdesbien$ java6 fdesbien-mac:~ fdesbien$ java -version java version "1.6.0_65" Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609) Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode) fdesbien-mac:~ fdesbien$ fdesbien-mac:~ fdesbien$ java7 fdesbien-mac:~ fdesbien$ java -version java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode) fdesbien-mac:~ fdesbien$ Et voilà! Maximum flexibility without downsides, just I like it. 

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• GPG Invalid Signature

  - by user46421

  I am having problems with the following (in an attempt to remove hyperlinks, I have removed one of the "/" from the addresses): W: GPG error: http://archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]> W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures were invalid: BADSIG B725097B3ACC3965 Launchpad lffl W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures were invalid: BADSIG 4874D3686E80C6B7 Launchpad PPA for Banshee Team W: GPG error: http://archive.getdeb.net jaunty-getdeb Release: The following signatures were invalid: BADSIG A8A515F046D7E7CF GetDeb Archive Automatic Signing Key <[email protected]> W: GPG error: http://badgerports.org lucid Release: The following signatures were invalid: BADSIG C90F9CB90E1FAD0C Jo Shields <[email protected]> W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures were invalid: BADSIG 976B5901365C5CA1 Launchpad PPA for transmissionbt W: Failed to fetch http://ppa.launchpad.net/dlecan/openjdk/ubuntu/dists/oneiric/main/source/Sources 404 Not Found W: Failed to fetch http://ppa.launchpad.net/dlecan/openjdk/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/sevenmachines/flash/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/sun-java-community-team/sun-java6/ubuntu/dists/oneiric/main/source/Sources 404 Not Found W: Failed to fetch http://ppa.launchpad.net/sun-java-community-team/sun-java6/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found I have tried the following solutions which were in a closed case titled "The following signatures were invalid": First of all try sudo apt-get clean sudo apt-get update && sudo apt-get upgrade Some ISPs cache the packages and errors like these are reported then. If the above commands don't work, try sudo apt-get update -o Acquire::http::No-Cache=True and again sudo apt-get update && sudo apt-get upgrade If it still doesn't work, sudo apt-get update -o Acquire::BrokenProxy=true sudo apt-get update && sudo apt-get upgrade

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• Tool for checking source for dependencies on specific Java versions

  - by Gregor

  Is there a quick way (e.g. tool) to detect, from the source (or maybe even from compiled classes), which parts of an application call Java API methods that are only implemented in a specific Java version? (e.g. which parts of my app are Java6-specific) I don't necessarily want to hop through all ClassMismatchErrors and avoid the trial-and-error-method. Let's say I only want to document which parts of an application won't work if they were writte for, e.g., Java6 and I want to run it in a version 5 JDK. Is there something like this? Google did not help this time, nor did I find any solution here (a rare case indeed:)

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• How can I configure a Hudson job to use a specific JDK?

  - by rewbs

  I have a number of projects running on a Hudson slave. I'd like one of them to run Ant under Java6, rather than the default (which is Java5 in my environment). In the project configuration view, I was hoping to find either: An explicit option allowing me to set a custom JDK location to use for this project. A way to set custom environment variables for this project, which would allow me to set JAVA_HOME to the JDK6 location. The would make Ant pick up and run on Java6 as desired. Is there a way to do either of the above? If one of those facilities is available, I can't see how to access it. I'm running on Hudson 1.285. I would rather avoid using an "execute shell" operation instead of the "invoke Ant" operation if possible: my slave is on z/OS and Hudson doesn't seem to create the temporary shell scripts properly on this platform (probably an encoding issue).

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• How do I install packages like Oracle Java?

  - by Sean

  I've been trying to install various things, and I need some packages that just aren't showing up in Ubuntu's Software Center. In fact, no packages are showing up there, just whole programs. I need to install sun-java6-jre for some of these things, but it's simply not in the Software Center. I had Ubuntu last year (and due to various circumstances, had to get rid of it shortly thereafter) and these things were there then. So why can't I find them now?

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• HP-UX: libstd_v2 in stack trace of JNI code compiled with g++

  - by Miguel Rentes

  Hello, uname -mr: B.11.23 ia64 g++ --version: g++ (GCC) 4.4.0 java -version: Java(TM) SE Runtime Environment (build 1.6.0.06-jinteg_20_jan_2010_05_50-b00) Java HotSpot(TM) Server VM (build 14.3-b01-jre1.6.0.06-rc1, mixed mode) I'm trying to run a Java application that uses JNI. It is crashing inside the JNI code with the following (abbreviated) stack trace: (0) 0xc0000000249353e0 VMError::report_and_die{_ZN7VMError14report_and_dieEv} + 0x440 at /CLO/Components/JAVA_HOTSPOT/Src/src/share/vm/utilities/vmError.cpp:738 [/opt/java6/jre/lib/IA64W/server/libjvm.so] (1) 0xc000000024559240 os::Hpux::JVM_handle_hpux_signal{_ZN2os4Hpux22JVM_handle_hpux_signalEiP9 __siginfoPvi} + 0x760 at /CLO/Components/JAVA_HOTSPOT/Src/src/os_cpu/hp-ux_ia64/vm/os_hp-ux_ia64.cpp:1051 [/opt/java6/jre/lib/IA64W/server/libjvm.so] (2) 0xc0000000245331c0 os::Hpux::signalHandler{_ZN2os4Hpux13signalHandlerEiP9__siginfoPv} + 0x80 at /CLO/Components/JAVA_HOTSPOT/Src/src/os/hp-ux/vm/os_hp-ux.cpp:4295 [/opt/java6/jre/lib/IA64W/server/libjvm.so] (3) 0xe00000010e002620 ---- Signal 11 (SIGSEGV) delivered ---- (4) 0xc0000000000d2d20 __pthread_mutex_lock + 0x400 at /ux/core/libs/threadslibs/src/common/pthreads/mutex.c:3895 [/usr/lib/hpux64/libpthread.so.1] (5) 0xc000000000342e90 __thread_mutex_lock + 0xb0 at ../../../../../core/libs/libc/shared_em_64/../core/threads/wrappers1.c:273 [/usr/lib/hpux64/libc.so.1] (6) 0xc00000000177dff0 _HPMutexWrapper::lock{_ZN15_HPMutexWrapper4lockEPv} + 0x90 [/usr/lib/hpux64/libstd_v2.so.1] (7) 0xc0000000017e9960 std::basic_string,std::allocator{_ZNSsC1ERKSs} + 0x80 [/usr/lib/hpux64/libstd_v2.so.1] (8) 0xc000000008fd9fe0 JniString::str{_ZNK9JniString3strEv} + 0x50 at eg_handler_jni.cxx:50 [/soft/bus-7_0/lib/libbus_registry_jni.so.7.0.0] (9) 0xc000000008fd7060 pt_efacec_se_aut_frk_cmp_registry_REGHandler::getKey{_ZN44pt_efacec_se_aut_frk_cmp_registry_REGHandler6getKeyEP8_jstringi} + 0xa0 [/soft/bus-7_0/lib/libbus_registry_jni.so.7.0.0] (10) 0xc000000008fd17f0 Java_pt_efacec_se_aut_frk_cmp_registry_REGHandler_getKey__Ljava_lang_String_2I + 0xa0 [/soft/bus-7_0/lib/libbus_registry_jni.so.7.0.0] (11) 0x9fffffffdf400ed0 Internal error (-3) while unwinding stack [/CLO/Components/JAVA_HOTSPOT/Src/src/os_cpu/hp-ux_ia64/vm/thread_hp-ux_ia64.cpp:142] This JNI code and dependencies are being compiled using g++, are multithreaded and 64 bit (-pthread -mlp64 -shared -fPIC). The LD_LIBRARY_PATH environment variable is set the dependencies location, and running ldd on the JNI shared libraries finds them all: ldd libbus_registry_jni.so: libefa-d.so.7 = /soft/bus-7_0/lib/libefa-d.so.7 libbus_registry-d.so.7 = /soft/bus-7_0/lib/libbus_registry-d.so.7 libboost_thread-gcc44-mt-d-1_41.so = /usr/local/lib/libboost_thread-gcc44-mt-d-1_41.so libboost_system-gcc44-mt-d-1_41.so = /usr/local/lib/libboost_system-gcc44-mt-d-1_41.so libboost_regex-gcc44-mt-d-1_41.so = /usr/local/lib/libboost_regex-gcc44-mt-d-1_41.so librt.so.1 = /usr/lib/hpux64/librt.so.1 libstdc++.so.6 = /opt/hp-gcc-4.4.0/lib/gcc/ia64-hp-hpux11.23/4.4.0/../../../hpux64/libstdc++.so.6 libm.so.1 = /usr/lib/hpux64/libm.so.1 libgcc_s.so.0 = /opt/hp-gcc-4.4.0/lib/gcc/ia64-hp-hpux11.23/4.4.0/../../../hpux64/libgcc_s.so.0 libunwind.so.1 = /usr/lib/hpux64/libunwind.so.1 librt.so.1 = /usr/lib/hpux64/librt.so.1 libm.so.1 = /usr/lib/hpux64/libm.so.1 libunwind.so.1 = /usr/lib/hpux64/libunwind.so.1 libdl.so.1 = /usr/lib/hpux64/libdl.so.1 libunwind.so.1 = /usr/lib/hpux64/libunwind.so.1 libc.so.1 = /usr/lib/hpux64/libc.so.1 libuca.so.1 = /usr/lib/hpux64/libuca.so.1 Looking at the stack trace, it seams odd that, although ldd list g++'s libstdc++ is being used, the std:string copy c'tor being reported as used is the one in libstd_v2, the implementation provided by aCC. The crash happens in the following code, when method str() returns: class JniString { std::string m_utf8; public: JniString(JNIEnv* env, jstring instance) { const char* utf8Chars = env-GetStringUTFChars(instance, 0); if (utf8Chars == 0) { env-ExceptionClear(); // RPF throw std::runtime_error("GetStringUTFChars returned 0"); } m_utf8.assign(utf8Chars); env-ReleaseStringUTFChars(instance, utf8Chars); } std::string str() const { return m_utf8; } }; Simultaneous usage of the two C++ implementations could likely be a reason for the crash, but that should not be happening. Any ideas?

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• Multiple Java environment on the same Linux machine

  - by jldupont

  What's is the most efficient way to install multiple Java JDK versions on the same Linux machine? I need Java5 whilst my current Ubuntu 9.10 Karmic comes loaded with Java6. I know I could setup a VM for this but I am looking for alternatives.

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• Should I reuse variables?

  - by IAdapter

  Should I reuse variables? I know that many best practice say you should not do it, however later when different developer is debugging the code and have 3 variables that look a like and only difference is that they are created in different places in the code he might be confused. unit-testing is a great example of this. However I do know that best practice are most of the time against it. For example they say not to "overide" method parameters. Best practice are even are against nulling the previous variables (in Java there is Sonar that has warning when you assign null to variable that you don't need to do it to call garbage collector since Java6. you cant always control what warnings are turned off, most of the time the default is on)

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• How to play Minecraft Classic?

  - by djeikyb

  First off, I've read through this question: How to install minecraft?. I'm interested in the free web-embedded version (for demo purposes), not the paid and downloaded .jar file. I removed the open-java whatever that Ubuntu prefers to use. I installed sun-java6-jre. Then I ran sudo update-alternatives --config java to ensure I was using Sun's Java. Restarted my browsers, then tried to start the game from: http://www.minecraft.net/play.jsp It pops a prompt to make sure I really want to allow direct interaction between minecraft.net and my computer, I agree. The in browser display mumbles something about loading a library, then darkness. The page doesn't crash, ps shows the java plugin process, all seems well except the game doesn't load. I see the same behaviour on Chromium 11.0.662.0 (73963) as Firefox 4 RC1.

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• 'tools.jar' is not in IDEA classpath

  - by Patrick

  I am a new user of Linux, it has been recommended to me by my friend. He told me to install software called IntelliJ Idea IDE. Well I have been following the tutorial. But now when I try to open "idea.sh", an error message pops-up: 'tools.jar' is not in IDEA classpath. Please ensure JAVA_HOME points to JDK rather than JRE. Please remember that I'm new to Ubuntu and I'm planning for a nice long stay once I get myself into it :) Also I do not know if I am running a correct Java6 JDK. When I do java -version, this is what I get: java version "1.6.0_23" OpenJDK Runtime Environment (IcedTea6 1.11pre) (6b23~pre10-0ubuntu5) OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode) Thank You for reading this and I hope I will get a nice response.

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• Partition Configuration to avoid reinstalling applications after update

  - by nightcrawler

  The major bane when I update Ubuntu (which is way more frequent than Windows) is that I lose all installed application. To be precise I do a lot of Maple, Matlab, Geogebra & for all of those I install Java platform which too isnt very straightforward plus the license management things, which really give me craps. I don't install application in /home (to be made available to all users) thus a separate /home partition is meaningless. Can we circumvent this problem somehow such that Java dependent applications along with JDK doesn't blow away after update, may be by a separate partition (just like /home) where only custom (other than provided by Ubuntu Software Center) install application resides Further: I use specific binary of Java (Java6 update 32), its an important requirement for me, thus I don't want to let it crash/overwritten or similar

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• i cant download things from software center

  - by mark

  i keep getting this error when i want to get an app from software crnter File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 972, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1096, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:I wasn't able to locate a file for the sun-java6-jre package. This might mean you need to manually fix this package. any one help please!!!!!!!! how do i manually fix!

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