One of the biggest strengths of OpenSUSE is that it has a wide range of packages and programs that can be installed. On the other hand, the OpenSUSE project has many community and official repositories that extend even more the functionality of the distribution.

OpenJDK or Oracle Java

Since Java version 11, the license has changed and become a little more restrictive for commercial purposes. However, OpenJDK continues to run alongside the commercial version that includes professional support.

The above situation opens a small controversy about which implementation to use. And the answer depends on each developer however, with OpenJDK you will not have license problems and is ideal for testing features and educational projects.

Well, for this tutorial I will choose OpenJDK. Do not worry it is Java but open source.

Let’s go for it.

Install Java 15 on OpenSUSE 15.2

Once you have a terminal session open, it is necessary to completely upgrade your system. To do this, run the following command:

:~$ sudo zypper up

Once the system upgrade is complete, we can continue.

Java 15 packages can be found in an OpenSUSE factory repository. This repository has proven to be quite stable and we will be able to use it without problems.

So to add this repository run it:

:~$ sudo zypper ar http://download.opensuse.org/repositories/Java:/Factory/openSUSE_Leap_15.2/ java

Now that the repository has been added, it needs to be reprioritized so that it does not get into trouble with the rest:

:~$ sudo zypper mr -p 70 java
Repository 'java' priority has been set to 70.

Then, refresh all the repositories to load the newly added one. When you first use this repository, you will be asked to accept the GPG key for it.

:~$ sudo zypper refresh
Retrieving repository 'java' metadata --------------------------------------------------------------------------------------------------------------------------------[|]
 New repository or package signing key received:
 Repository:       java                                        
   Key Name:         Java OBS Project Java@build.opensuse.org  
   Key Fingerprint:  97119219 72E27C87 BBC1BA89 E38C29BC 4276E0B9
   Key Created:      Mon 18 Jun 2018 09:42:22 AM -04             
   Key Expires:      Wed 26 Aug 2020 09:42:22 AM -04             
   Rpm Name:         gpg-pubkey-4276e0b9-5b27b6be                
 Do you want to reject the key, trust temporarily, or trust always? r/t/a/?: a
 Retrieving repository 'java' metadata ……………………………………………………………………………………………………………..[done]
 Building repository 'java' cache ………………………………………………………………………………………………………………….[done]
 Repository 'Non-OSS Repository' is up to date.                                                                                                                           
 Repository 'Main Repository' is up to date.                                                                                                                              
 Retrieving repository 'Main Update Repository' metadata ……………………………………………………………………………………………..[done]
 Building repository 'Main Update Repository' cache ………………………………………………………………………………………………….[done]
 Retrieving repository 'Update Repository (Non-Oss)' metadata …………………………………………………………………………………………[done]
 Building repository 'Update Repository (Non-Oss)' cache ……………………………………………………………………………………………..[done]
 All repositories have been refreshed.

Now, you can install Java 15 on OpenSUSE 15.2

:~$ sudo zypper in java-15-openjdk

Finally, check the installed version

:~$ java --version
openjdk 15-internal 2020-09-15
OpenJDK Runtime Environment (build 15-internal+33-suse-lp152.14.15-x8664)
OpenJDK 64-Bit Server VM (build 15-internal+33-suse-lp152.14.15-x8664, mixed mode)

So, enjoy it.

Conclusion

Java 15 is an improved version of a great programming language. This makes many developers attentive to its evolution with a view to a new LTS version. Now you know how to install it in OpenSUSE 15.2 which is a distribution quite focused on newcomers but also professional developers. So, you know how to install Java 15 on OpenSUSE 15.2

Please share this post and join our Telegram channel.

Thanks for reading the post.

The post How to install Java 15 on OpenSUSE 15.2? appeared first on Linux Windows and android Tutorials.

Install Java 14 on Ubuntu 20.04

Visit the official page of Java SE Development Kit to download the latest version of Java as Java 14. But here we’ll use the command wget and curl in order to get the package to install. So first of all update the system and get wget & curl.

sudo apt update 

Then run the below command to add the Java 14 repository on Ubuntu 20.04.

 sudo add-apt-repository ppa:linuxuprising/java 

After adding the Java 14 repository on Ubuntu 20.04, you can install the Oracle Java 14 by hitting the below command.

sudo apt -y install oracle-java14-installer

Output:

Download done.
 Removing outdated cached downloads…
 update-alternatives: using /usr/lib/jvm/java-14-oracle/bin/jpackage to 
 provide /usr/bin/jpackage (jpackage) in auto mode
 Oracle JDK 14 installed
 Important
 To set Oracle JDK 14 as default, install the "oracle-java14-set-default
 " package.
 E.g.: sudo apt install oracle-java14-set-default.
 Selecting previously unselected package oracle-java14-set-default.
 (Reading database … 167881 files and directories currently installed.
 )
 Preparing to unpack …/oracle-java14-set-default_14.0.1-1~linuxuprisin
 g1_amd64.deb …
 Unpacking oracle-java14-set-default (14.0.1-1~linuxuprising1) …
 Selecting previously unselected package gsfonts.
 Preparing to unpack …/gsfonts_1%3a8.11+urwcyr1.0.7~pre44-4.4_all.deb 
 …
 Unpacking gsfonts (1:8.11+urwcyr1.0.7~pre44-4.4) …
 Selecting previously unselected package gsfonts-x11.
 Preparing to unpack …/gsfonts-x11_0.27_all.deb …
 Unpacking gsfonts-x11 (0.27) …
 Setting up oracle-java14-set-default (14.0.1-1~linuxuprising1) …
 Setting up gsfonts (1:8.11+urwcyr1.0.7~pre44-4.4) …
 Setting up gsfonts-x11 (0.27) …
 Processing triggers for fontconfig (2.13.1-2ubuntu3) …
 Processing triggers for desktop-file-utils (0.24-1ubuntu2) …
 Processing triggers for mime-support (3.64ubuntu1) …
 Processing triggers for hicolor-icon-theme (0.17-2) …
 Processing triggers for gnome-menus (3.36.0-1ubuntu1) …
 Processing triggers for shared-mime-info (1.15-1) …
 sabi@Ubuntu:~$ 

Then accept the License agreement when prompted.

On the next step, accept digital licence technology agreement to proceed further.

And then set up the Java 14 Environment variables by typing below command in your terminal.

sudo nano /etc/profile.d/jdk.sh
 export JAVA_HOME=/usr/lib/jvm/java-14-oracle
 export PATH=$PATH:$JAVA_HOME/bin

Finally, source the file

source /etc/profile.d/jdk.sh

Verify the version of java using below command on Ubuntu 20.04.

java --version
sabi@Ubuntu:~$ java --version
 java 14.0.1 2020-04-14
 Java(TM) SE Runtime Environment (build 14.0.1+7)
 Java HotSpot(TM) 64-Bit Server VM (build 14.0.1+7, mixed mode, sharing)
 sabi@Ubuntu:~$ 

How To Set Java 14 as Default Java Version on Ubuntu 20.04

To make the Java 14 default version, type the following command.

sabi@Ubuntu:~$ sudo update-alternatives --config java
 There are 3 choices for the alternative java (providing /usr/bin/java).
   Selection    Path                                            Priority   Status
 0            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      auto mode
   1            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      manual mode
 2            /usr/lib/jvm/java-14-oracle/bin/java             1091      manual mode
 3            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode 
 Press  to keep the current choice[*], or type selection number: 2

And select the number from the list to be make default and press enter.

So, this is how you can install Java 14 on Ubuntu 20.04.

The post How To Install Oracle Java 14 on Ubuntu 20.04 appeared first on Linux Windows and android Tutorials.