Questions tagged [jdk]
Questions relating to the installing and use of the Java Development Kit (jdk)
571
questions
577
votes
28
answers
923k
views
How can I install Sun/Oracle's proprietary Java JDK 6/7/8 or JRE?
I want to install Oracle's JRE and to update to the latest version with the Software Updater when they released. Is there a Ubuntu package that is provided by Canonical or Oracle?
Before release Java ...
- 10.2k
249
votes
0
answers
339k
views
How do I install Oracle Java JDK 7? [duplicate]
If I downloaded the latest JDK from Oracle, do I just download the .tar file and extract it to /usr/lib/jvm/?
- 2,501
184
votes
6
answers
593k
views
Switch between multiple java versions
While installing Android Studio on Ubuntu 14.04 I get the message that my Java version (javac 1.7.0_79) is causing problems. I found a solution of how to install a newer Oracle version of Java:
sudo ...
- 3,118
107
votes
10
answers
319k
views
How do I install Oracle JDK 6? [duplicate]
Most of the software is not thoroughly tested with Java 7 and I would like to install Oracle's JDK 6.0 on Ubuntu 11.10.
Could someone please provide me the instructions for the same?
- 4,249
104
votes
4
answers
460k
views
How can I tell what version of Java I have installed?
I want to start toying around with java (eventually getting to the point where I can write basic little programs for android or web), but I've managed to have java messed up on my computer (from past ...
- 1,467
85
votes
4
answers
200k
views
Setting JDK 7 as default
four@twenty:~$ file /etc/alternatives/java /etc/alternatives/javac
/etc/alternatives/java:symbolic link to `/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java'
/etc/alternatives/javac:symbolic link to `/...
- 969
84
votes
3
answers
36k
views
How to install JDK sources?
How can I download the source code of Java on my local machine, so I can reference it in an IDE?
- 5,107
71
votes
14
answers
210k
views
How do I make java default to a manually installed JRE/JDK?
I have Ubuntu 12.04 amd64 installed on my machine, on the previous versions of Ubuntu it was deadly easy, now there is this command update-java-alternatives with a really bad man page.
I just have my ...
- 2,851
59
votes
4
answers
55k
views
How to update from webupd8 team PPA (Oracle JDK 8/9) that got inconsistent with its GPG key?
A few days ago, I started getting the following error when performing apt-get update:
E: Repository 'http://ppa.launchpad.net/webupd8team/java/ubuntu bionic InRelease' changed its 'Label' value from ...
- 1,277
48
votes
9
answers
114k
views
'tools.jar' is not in IDEA classpath
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 "...
- 481
47
votes
8
answers
332k
views
How to set the JDK for Android Studio?
I can't compile a default new project for Android 2.1 because(?) the JDK used by Android Studio is JDK 1.7 but it should be JDK 1.6.
To change it I go to File -> Project Structure and try to find the ...
- 18.9k
42
votes
5
answers
95k
views
Specify JDK for tomcat7
I have installed tomcat7 (using apt-get install) and whenever I want to start tomcat7 it says :
* no JDK found - please set JAVA_HOME
I have set JAVA_HOME in my bash.bashrc and also in ~/.bashrc and ...
- 1,707
41
votes
6
answers
209k
views
Setup and install IntelliJ with JDK
Is there any scripts for downloading and installing IntelliJ with JavaJDK or OpenJDK?
I don't know how I did it before using Ubuntu 12.10 but I'm now on a fresh 13.04 install and I have been looking ...
- 2,592
35
votes
3
answers
186k
views
How to remove Oracle JDK
I didn't find any related articles about How to remove Oracle JDK. There are some related articles but they didn't solve the problem.
I installed Oracle JDK tarball file from Oracle site by following ...
- 780
33
votes
1
answer
59k
views
installed jdk by and have Error: Could not create the Java Virtual Machine
I am getting my new laptop going and went to install the latest oracle JDK 7u25. I followed the instructions on this site to do it.
Afterwards when I type java --version in the terminal I get the ...
- 691
32
votes
4
answers
101k
views
netbeans not all requested modules can be enabled
I know this question has already been posted, but the solutions provided don't work for me.
I added the webupd8team/java repository and installed oracle-java8-installer and oracle-java8-set-default.
I ...
30
votes
3
answers
86k
views
How can I install OpenJDK on Ubuntu 16.04? [duplicate]
Since I upgraded to the latest version of Ubuntu, I cannot install the Java OpenJDK package needed to compile Android custom ROMs. When I run sudo apt-get install openjdk-7-jdk, the following error ...
- 335
24
votes
3
answers
147k
views
How do I uninstall Java 11 to be able to install Java 8 for Android Studio?
I tried to install Android Studio but it gave me several problems.
Among them is that they told me that it need Java 8 while on my PC Java 11 is installed.
When I run java -version, the result is the ...
- 795
24
votes
5
answers
27k
views
How to install the OpenJDK 8 (Ubuntu 19.04)?
Only openjdk-11-jdk and newer seem to be available. Is there any way to install the OpenJDK 8? Preferably without adding a PPA.
- 577
24
votes
5
answers
91k
views
JavaFX missing, Ubuntu 18.04
I have Java 8 and Ubuntu 18.04. I'm using NetBeans and when tried to make some program, it couldn't be done because JavaFX is missing.
I installed Java JDK with NetBeans from Oracle's site and ...
- 915
23
votes
2
answers
11k
views
java-8-oracle (1.8.0_66) problem with PrintAssembly "Could not load hsdis-amd64.so"
I'm trying to run my programs with -XX:+PrintAssembly options but I always get message like:
Java HotSpot(TM) 64-Bit Server VM warning: PrintAssembly is enabled; turning on DebugNonSafepoints to ...
- 231
22
votes
3
answers
69k
views
"No such file or directory" when invoking java
I'm trying to re-install Oracle JDK 7 32 bit to 64 bit Ubuntu (previously 64 bit JDK was installed). JDK is currently present at /usr/lib/jvm/jdk1.7.0. I invoke
sudo update-alternatives --remove "...
- 842
18
votes
1
answer
90k
views
how to install java 8 in ubuntu 16.04? [duplicate]
How to install java-JDK 8 & maven in Ubuntu 16.04 without adding any PPA?
- 989
18
votes
1
answer
81k
views
Where is the Oracle java jdk keystore located?
Installed Oracle Java with the webupd8 ppa and need to tweak some policy settings (access to clipboard specifically)
webUpd8 plug: http://www.webupd8.org/2011/09/how-to-install-oracle-java-7-jdk-in....
- 710
18
votes
2
answers
36k
views
Changing JVM in Java
I only recently discovered the different JVM's on the wiki page and thought I'd start tinkering. Its been difficult to find documentation on how to configure Java on Ubuntu though.
Lets say I wanted ...
- 2,307
18
votes
2
answers
22k
views
Java 11 to 8: update-alternatives: error: no alternatives for mozilla-javaplugin.so
I have Java 11 and 8 in my Ubuntu 18.04, side by side.
I mean to set Java 8 as the default.
What I get:
$ sudo update-java-alternatives --set /usr/lib/jvm/java-1.8.0-openjdk-amd64
update-...
17
votes
4
answers
19k
views
Can't install Oracle JDK 9
I uninstalled jdk packages and now can't install them back. I managed to install oracle-java7-installer and oracle-java8-installer but can't install oracle-java9-installer. It seems that my computer ...
- 175
16
votes
1
answer
93k
views
How can I install jdk-8u91-linux-x64.tar.gz on Ubuntu? [duplicate]
I downloaded jdk-8u91-linux-x64.tar.gz from the Oracle website.
How can I install jdk-8u91-linux-x64.tar.gz?
I have tried apt-get install jdk-8u91-linux-x64.tar.gz and also
sudo add-apt-repository ...
- 171
16
votes
2
answers
50k
views
Get error when install Oracle JDK 8 on Ubuntu 18.04 [duplicate]
I am trying install Oracle Java 8 on Ubuntu 18.04 LTS.
$ java --version
Command 'java' not found, but can be installed with:
sudo apt install default-jre
sudo apt install openjdk-11-jre-...
- 463
16
votes
5
answers
35k
views
Error installing oracle-java8-installer from webup8team ppa
Does anyone know how to fix this?
First I did:
sudo add-apt-repository ppa:webupd8team/java
Then I did:
sudo apt-get update
And then:
$ sudo apt-get install oracle-java8-installer
Reading ...
- 161
16
votes
1
answer
10k
views
Ugly/Non Anti-Aliased fonts in Java-Swing Applications
I've recently switched to Ubuntu and I've installed Oracle's Java JDK 8u45 (32 bit) using the webupd8team/java repository.
Everything seems to be working fine except that the Java-Swing applications ...
- 881
16
votes
1
answer
95k
views
gzip: stdin: unexpected end of file -> problem in extracting jdk-7u55-linux-x64.tar.gz
I have downloaded 'jdk-7u55-linux-x64.tar.gz'
When I execute following command to extract,
sudo tar xvzf jdk-7u55-linux-x64.tar.gz
also tried,
sudo tar xvf jdk-7u55-linux-x64.tar.gz
sudo tar xf ...
- 11.4k
16
votes
3
answers
51k
views
Netbeans install error: The specified jdk folder does not contain jdk
During installation of Netbeans 7.3 I got this message
the specified jdk folder does not contain jdk
I have openjdk 7 installed on my system using apt-get. I tried to specify the path to /usr/lib/...
- 2,142
16
votes
3
answers
59k
views
How to install openjdk-7-jdk on Ubuntu 12.04 without dragging in unrelated GUI and sound packages?
Ubuntu 12.04.2 LTS
What's going on here?
# apt-get install openjdk-7-jdk
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be ...
- 263
15
votes
3
answers
72k
views
IcedTea plugin for OpenJDK 8
I updated from OpenJDK 7 to 8. I uninstalled 7, which uninstalled the IcedTea plugin as well. I tried to reinstall IcedTea with
sudo apt-get install icedtea-7-plugin
But it doesn't work. When I ...
- 253
15
votes
1
answer
72k
views
"Please ensure you have JAVA_HOME points to JDK rather than JRE" message
I have java installed
aaa@ubuntu:~$ whereis java
java: /usr/bin/java /usr/bin/X11/java /usr/local/java /usr/share/java
aaa@ubuntu:~$ whereis javac
javac: /usr/bin/javac /usr/bin/X11/javac
and etc/...
- 2,632
14
votes
5
answers
121k
views
bash: /usr/bin/java: No such file or directory
I have installed jdk1.8.0 manually from the oracle website.
I have followed the steps here on Digital Ocean.
When I executed java -version I got this result:-
bash: /usr/bin/java: No such file or ...
- 141
14
votes
1
answer
35k
views
How to install JDK 19 on Ubuntu 22.04 LTS?
Today, oracle release JDK 19. How to install JDK 19 on Ubuntu 22.04 LTS?
https://www.oracle.com/java/technologies/downloads/
- 509
14
votes
3
answers
39k
views
Java can't find cacerts
I've been trying to setup a java dev environment with no luck. I installed openjdk-8-jdk but I keep getting java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-...
- 771
14
votes
1
answer
23k
views
Which Java package should I use: OpenJDK or Oracle JDK?
I'm new to Java development under Ubuntu. When I typed javac in the terminal, it prompted me to install OpenJDK and a bunch of other JDKs. I want to know if there is any difference between OpenJDK 7 ...
- 1,287
13
votes
3
answers
67k
views
How can i install jdk7 on ubuntu 18.04 lts 64bit? [duplicate]
I upgrade my system to ubuntu 18.04 lts, but I work on projects that require JDK 7.
How can i install jdk7 on ubuntu 18.04 lts 64bit?
- 633
13
votes
2
answers
19k
views
How can I install the latest jdk 9 using terminal command on ubuntu 16.04 LTS ?
I have jdk 8 on my ubuntu desktop. I need to install the latest jdk 9 for Java programming. What are the commands for Java programming and IDE such as Netbeans or Eclipse?
- 133
13
votes
2
answers
18k
views
OpenJDK vs. Oracle JDK for Android Studio
When I run Android Studio with OpenJDK installed I get a warning recommending the use of Oracle JDK. Is Oracle JDK actually better or is it fine to just stick with OpenJDK? Installing Oracle JDK seems ...
- 173
12
votes
3
answers
56k
views
Unable to set JDK path in IntelliJ IDEA
I am trying to get started with IntelliJ IDEA, however I am not able to set the JDK path. which java returns /usr/bin/java, however IDEA is not able to find the specified path. Expanding bin in the ...
- 221
11
votes
3
answers
47k
views
update-alternatives: "alternative path doesn't exist" issue while updating JDK7
I decided to update my JDK7 to recent version from here.
Corresponding x64 tag.gz archive for my architecture has been downloaded and extracted to /usr/lib/jvm as usual. All previous versions of Java ...
- 800
10
votes
1
answer
68k
views
How to uninstall Oracle JDK in Ubuntu 16.04 LTS [duplicate]
I installed Oracle JDK on Ubuntu 16.04 LTS using the following commands:
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
But I tried ...
- 203
10
votes
4
answers
65k
views
"Oracle JDK 7 Is NOT installed" error?
I'm trying to install JDK7 on ubuntu 12.4.
In the first try, the power has gone and the laptop shutdown in the middle of downloading JDK7 using terminal as I was using the next terminal commands
...
- 4,811
10
votes
3
answers
52k
views
How to set JAVA_HOME to point to a JDK installation?
I installed sun-java6-jdk.
I need to find its home directory. JAVA_HOME must point to a JDK installation, not JRE.
- 257
10
votes
1
answer
64k
views
How to set new JDK home in NetBeans IDE after Java update (NetBeans IDE refuses to start)
This is a question which will help you through what to once you have realised that after updating your Java version, NetBeans IDE refuses to launch. And even after updating your $PATH variable in your ...
user364819
10
votes
1
answer
22k
views
Removing Oracle JDK and re-configuring update-alternatives
Please check the scenario below:
sudo update-alternatives --config java
There are 5 choices for the alternative java (providing /usr/bin/java).
Selection Path ...
- 213