Questions tagged [openjdk]
Is a free and open source implementation of the Java programming language. It may be installed from the software centre.
591
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Problems installing jdk over OpenJdk on Ubuntu
I tried to install JDK 21 on a machine with Ubuntu (last LTS) with a previous installation of OpenJDK 17.
I tried to remove the old one first with a mix of autoremove and purge (I do not remember the ...
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0
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19
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I'm trying to run a .jnlp file on ubuntu 22.04.4 LTS [duplicate]
This is a part of the .jnlp script that I'm trying to run in Ubuntu.
<resources>
<!-- Application Resources -->
<j2se version="1.7+" href="http://java.sun....
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0
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64
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VisualVM Version of OpenJDK is not supported
I have install VisualVM on my Ubuntu machine, and I'm getting this error when trying to open it:
Version of OpenJDK is not supported. Please use the default-jdk.
I have no idea on how to solve it
java ...
6
votes
1
answer
25k
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install openjdk 21
I have Ubuntu 22.04.3 LTS.
I have run
sudo apt update
but when I execute
apt install openjdk-21
the package can't be located
Reading package lists... Done
Building dependency tree... Done
Reading ...
0
votes
0
answers
56
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Installing Ant is overriding Java Installation
I am trying to install ANT after installing java. My java in Sun Java.
pc19@pc19-H110:~$ java -version
java version "20.0.2" 2023-07-18
Java(TM) SE Runtime Environment (build 20.0.2+9-78)
...
2
votes
1
answer
115
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How to enforce a package dependency instead of an alternative?
I am developing a Debian package for Ubuntu which uses Java 17. We have historically had a runtime dependency on openjdk-17-jre. We have a part of our software that has used JavaFX on Windows and ...
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0
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87
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Getting error while installing NetExtender in Ubuntu 22.04
Unable to install netextender in Ubuntu while executing ./install in termnal. The error coming is
./install: line 302: /usr/sbin/netExtender: cannot execute binary file: Exec format error
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119
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REW (Room EQ wizard) not working?
REW (Room EQ Wizard) has stopped working.
The following warning pops up.
“Unable to access the selected device to
AudioFire8a [plughw:0,0] does not have any line supporting
PCM_SGNED 44100.0 Hz, 32 ...
2
votes
1
answer
1k
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How do I install and setup OpenJDK in Ubuntu from Snapcraft?
How is OpenJDK installed from snap so that javac and java are available from the CLI?
nicholas@mordor:~$
nicholas@mordor:~$ snap list
Name Version Rev Tracking ...
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1
answer
383
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How do I enable Libreoffice Base 7.5 on Ubuntu 22.04?
I've added openjdk version "11.0.19" 2023-04-18:
OpenJDK Runtime Environment (build 11.0.19+7-post-Ubuntu-0ubuntu122.04.1)
OpenJDK 64-Bit Server VM (build 11.0.19+7-post-Ubuntu-0ubuntu122....
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1
answer
2k
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Install openjdk-11-jdk 32bit on Ubuntu 20.04 64bit
I have installed openjdk-11 64 bit, but I need to install 32bit version
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20....
0
votes
0
answers
490
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Java process consuming too much ram in background, how to remove it?
My PC has been crashing a lot of times recently, it suddenly stops responding and after a few seconds, it asks me to force quit some apps. At first, I thought it was a problem with VSCode since it ...
0
votes
1
answer
961
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Unable to locate package openjdk-14-jdk, Ubuntu 20.04
I am trying to install openjdk-14-jdk required for install the Eclipse IDE, but it returns "E: Unable to locate package openjdk-14-jdk". There is no recommendation when I click TAB at "...
0
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1
answer
470
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After uninstalling java 18 and installing java 11, running a program based on Java raise "Error: could not find libjava.so"
I want to run a program based on Java 11 (Geoserver) in a Ubuntu 22.04 OS hosted on a virtualbox VM on a Windows 10 host OS.
Since I had Java 18 installed before (I installed it by following this ...
1
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1
answer
56
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I possibly installed a malware by a misspelled java installation command in the terminal
I was trying to download java, more specifically, JDK version 16. The right command was sudo apt install openjdk-16-jdk, but I end up typing sudo apt install open-jdk-11 instead, the funny thing is ...
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1
answer
277
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How to set PATH, HOME, JAVA_HOME variables correctly for working with maven after Java-JDK installations?
I visited the webpage at https://help.ubuntu.com/community/EnvironmentVariables and find out about setting environment variables and local user variables and have got a pretty clear picture. But I am ...
1
vote
1
answer
140
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Netbeans won't start due to UnsupportedClassVersionError and asks for java 55 aka 11 but I do have it
When I try to run my newly installed Netbeans, I get:
org.netbeans.InvalidException: StandardModule:org.netbeans.modules.db jarFile: /usr/share/netbeans/10.0/ide/modules/org-netbeans-modules-db.jar: ...
1
vote
0
answers
920
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Exception in thread "main" java.lang.RuntimeException
I'm trying to set up a 1.18.2 fabric modded minecraft server but I keep getting this error when I try to run the .jar file for it from the terminal. I am running ubuntu version 22.04 and openjdk ...
1
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1
answer
290
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openjdk-11-jdk-headless_11.0.16 Connection failed[IP: 91.189.91.39 80]
I trying to install openjdk-11-jdk-headless
But the same error (connection failed) occurs repeatedly as below.
How could I solve this problem ?
Ign:1 http://archive.ubuntu.com/ubuntu jammy-updates/...
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votes
1
answer
512
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Installing Latest Openjdk and Gradle using package managers only
Im fairly new to developing using the java ecosystem of tools, but i have never experienced a language ecosystem that involves as much installation effort.
My goal is to create a pico cli following ...
1
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0
answers
657
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How to install OpenJDK-19 debug symbols on Ubuntu 20.04?
I've installed OpenJDK-19 on Ubuntu 20.04 using snap. However, I'm not able to find the package in snap which corresponds to openjdk-19-dbg in apt, and I can't find OpenJDK-19 in apt at all.
Could you ...
0
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0
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1k
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Why is openjdk-17 in openjdk-17-jdk package empty?
I just installed openjdk-17-jdk package on fresh Ubuntu 22.04. It created two directories in /usr/lib/jvm:
java-17-openjdk-amd64 (which contains JDK)
openjdk-17 (which is empty)
At least that's what ...
1
vote
1
answer
9k
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How to install openjdk-18?
I am trying to optimize Minecraft on Linux and it says to get the latest OpenJDK JRE.
My current setup is:
$ sudo update-alternatives --config java ...
1
vote
0
answers
541
views
Ubuntu 22.04 Wine jvm creation error
I am trying to install the UNM2000.exe software, from Fiberhome via Wine on Ubuntu 22.04, but I'm getting this wine error:
JVM Creation failed.
I've used this software with the same installation ...
0
votes
1
answer
1k
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Trying to run Clion but get "No JDK found. Please validate either CLION_JDK, JDK_HOME or JAVA_HOME environment variable points to valid
I'm trying to run Clion IDE on Ubuntu 22.04.
I installed JRE and I think I installed JDK by running:
sudo apt install -y openjdk-18-jdk
but when I run ./clion.sh I get:
No JDK found. Please validate ...
3
votes
3
answers
3k
views
Cannot set JAVA_HOME after installing opendjk with snap
I installed openjdk with sudo snap install openjdk, and
I want to set JAVA_HOME to enable my java related commands in terminal, but it is not working.
I tried the following:
creating a script ...
0
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0
answers
1k
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Eclipse not working in Ubuntu 20.04
I can't even run a simple hello world! program in Eclipse.
Let's go step by step. Whenever I write a program and try to save it It shows this error:
And when I try to run the program It shows this ...
0
votes
1
answer
917
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Not being able to run a java executable
I am currently trying to install forge (forge-1.18.2-40.0.36-installer.jar) on my new ubuntu 22.04 install. I have already installed minecraft (with the .deb), show the "secret" .minecraft ...
0
votes
1
answer
856
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Downgrade openjfx on Ubuntu 22.04
I'm trying to Install the package Burai (https://nisihara.wixsite.com/burai) for DFT calculations. This package depends on the openjfx library and becaus of recent bug in the openjfx I'm getting the ...
0
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0
answers
2k
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Java not insalled after "sudo apt-get install openjdk-8-jre / sudo apt-get install openjdk-8-jdk"
I am getting the follwoing error message:
Command 'java' not found, but can be installed with:
sudo apt install default-jre # version 2:1.11-72, or
sudo apt install openjdk-11-jre-...
0
votes
0
answers
4k
views
IntelliJ Idea not able to detect Java JDK Path
I have openjdk 11.0.4.1 Installed In my System
I'm trying to do development in java using IntellijIDEA IDE of Jetbrains.
Whenever I try to start a new JAVA project I see no SDK in SDK path.
So, ...
1
vote
1
answer
2k
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How to run Minecraft 1.18.x in (k)ubuntu 20.04 / java 17 throwing errors
How do I get Minecraft 1.18.x to run? I have openjdk-17 installed and Minecraft 1.16.x runs fine with openjdk-8.
The relevant errors in the console are:
[16:37:00 ERROR]: Game ended with bad state (...
6
votes
1
answer
3k
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How do I run a specific program that requires a different version of Java without changing the default system version of Java?
I am using Ubuntu Server to host multiple Minecraft servers. For the latest versions of Minecraft, I need the latest version of Java; however, I would like to run a modded server as well and some of ...
0
votes
1
answer
697
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Remove alternative paths of Openjdk
I want to remove 0 and 1(in Selection Column) and keep only 2. How can i do it?
1
vote
1
answer
642
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Can't open smartgit, Java error
I've installed smartgit via ppa and tried to open it via GUI and it didn't. I tried to run smartgit command in terminal and it gave me this:
Ignoring following line in file /usr/share/smartgit/bin/...
4
votes
4
answers
15k
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Do I have log4j on my Ubuntu 18.04.6?
I'm obviously worried about this vulnerability, but I wonder if I even have this library on my machine?
The machine is a webserver running a couple of node expressjs frameworks over nginx, plus a ...
1
vote
0
answers
563
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Does Ubuntu 20.04 LTS have an upper memory limit for Java processes?
I've got this problem: There is a server running "Ubuntu 20.04.1 LTS" and a JDK 8 application. The machine has 256 GB of memory.
Currently the JVM is started with the arguments -Xms25g -...
-1
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2
answers
388
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"Helloworld" c program failed on my new ubuntu 20.04
when i build hello world program on eclips they are showing this
when i build helloworld program on c on eclips this is shown on console:-
10:21:36 **** Build of configuration Debug for project sample ...
1
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0
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499
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No .jinfo file. Adding Openjdk 16.0.2 to update-java-alternatives
I want to add /opt/jdk-16.0.2 to update-java-alternatives, but there is no .jinfo file. File should be there, because I have openjdk 16.0.2
I had no problems with adding java to update-alternatives ...
0
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1
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483
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Why is openjdk-8 not installed well?
I installed openjdk-8-jdk, but at /usr/lib/jvm/java-8-openjdk-amd64, there is only bin, include, lib, man.
Also, /usr/lib/jvm/java-8-openjdk-amd64/bin has just 2 files (appletviewer, jconsole).
So I'...
1
vote
1
answer
104
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Accept options when installing Java in terminal
How can I install Java (OpenJDK) on an Ubuntu system with regional preferences set int the command itself, so that it runs through the complete setup without needing user input? I am using this ...
0
votes
1
answer
107
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How do I run mutiple Java applications with different versions?
I am using Ubuntu 18.04 LTS and I have 2 apps which need to run with different Java versions. My 1st app (Mirth Connect) needs to run on jre1.8.0_171 and my second app (Power Assist) needs to run on ...
1
vote
1
answer
2k
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Java 11 installation complains about dependencies
I have installed Java 11 from this site - https://bell-sw.com/pages/repositories/#apt by using the following commands:
wget -q -O - https://download.bell-sw.com/pki/GPG-KEY-bellsoft | sudo apt-key ...
0
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1
answer
623
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Open JDK error when I Install Android Studio Arctic Fox on Xubuntu?
I am trying to install Android Studio Arctic Fox on my Xubuntu 20.04 using the official guide from here : https://developer.android.com/studio/install#64bit-libs
I downloaded the .zip file and unzip ...
0
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1
answer
578
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BioX 4.6 won't launch: "An illegal reflective access operation has occurred."
BioX won't launch when using JRE 11 on two PCs running Ubuntu 20.04.2 and Pop!_OS 21.04.
The BioX program however works fine without problems in openSUSE (Leap 15.2 and 15.3) which I replaced with ...
1
vote
0
answers
1k
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unrecognized algorithm name: PBEWithSHA1AndDESede
I am trying to use elasticsearch-certutil to generate a certificate
sudo /usr/share/elasticsearch/bin/elasticsearch-certutil cert -out /usr/share/elasticsearch/config/elastic-certificates.p12 -pass &...
0
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1
answer
699
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How to fix java.lang.ClassNotFoundException: gnu.io.CommPortIdentifier with libRXTX on Ubuntu 20.04?
I have the following error:
$ sudo java -jar /home/fadedbee/tc65sh-1.4.0/bin/tc65sh.jar -Djava.library.path=/usr/lib/jni/ -cp /usr/share/java/RXTXcomm.jar -p /dev/ttyUSB0 -b 115200 -f push.txt
tc65sh ...
1
vote
1
answer
2k
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$ sdk current java is showing Not using any version of java
I have sdkman installed in my linux ubuntu 18.04.
$ sdk version
SDKMAN 5.11.5+713
I installed amazon java correto 11 using the below command.
$ sdk install java 11.0.11.9.1-amzn
java 11.0.11.9.1-amzn ...
0
votes
1
answer
386
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Update Maven causes JAVA_HOME problem
I broke maven... I wanted to change from 3.6.0 to 3.8.1 and nothing is working yet
wget https://downloads.apache.org/maven/maven-3/3.8.1/binaries/apache-maven-3.8.1-bin.tar.gz
tar xf apache-maven-*....
0
votes
1
answer
239
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Intellij not able to access jdk
I am using Linux mint 20 (Posting it here as mint is based on Ubuntu😅). It has OpenJdk 11 (Checked it using --version), but Intellij doesn't recognise it. So, I tried adding it manually. I found that ...