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 Removing outdated cached downloads…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.

It is used for various purposes like developing web applications, android applications, games development and much more. So, let’s move towards the installation of Java 14 on our CentOS system.

Here we’ll see the two methods to install Java 14 on CentOS 8 you can choose your preferred one for an easy installation.

Check out this

How to Install Java 14 on Ubuntu / Debian.

Step 1: Installing Java 14 on CentOS 8

Go to the official release page of JDK 14 for downloading the latest archive or use the below command to download it using the terminal.

sudo yum -y install curl
curl -O https://download.java.net/java/GA/jdk14/076bab302c7b4508975440c56f6cc26a/36/GPL/openjdk-14_linux-x64_bin.tar.gz

Output:

[sabi@localhost ~]$ curl -O https://download.java.net/java/GA/jdk14/076bab302c7b4508975440c56f6cc26a/36/GPL/openjdk-14_linux-x64_bin.tar.gz
   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                  Dload  Upload   Total   Spent    Left  Speed
 100  189M  100  189M    0     0   412k      0  0:07:50  0:07:50 --:--:--  563k

Now, extract the above package

tar xvf openjdk-14_linux-x64_bin.tar.gz

Then move the output to the /opt/ directory

sudo mv jdk-14 /opt/

And set up the Java Environment variables.

[sabi@localhost ~]$ sudo tee /etc/profile.d/jdk14.sh <<EOF
  > export JAVA_HOME=/opt/jdk-14
  > export PATH=\$PATH:\$JAVA_HOME/bin
  > EOF
   export JAVA_HOME=/opt/jdk-14
   export PATH=$PATH:$JAVA_HOME/bin 

Now, source the file

source /etc/profile.d/jdk14.sh

Verify the installation using

$ echo $JAVA_HOME
 /opt/jdk-14
 $ java -version
 openjdk version "14" 2020-03-30
 OpenJDK Runtime Environment (build 14+36-1461)
 OpenJDK 64-Bit Server VM (build 14+36-1461, mixed mode, sharing)

Step 2: Installing Java SE Development Kit 14 on CentOS 8

As in one step we’ve installed the Java 14 using curl now we’ll install the Java SE Development Kit 14 on CentOS 8. For this you can go to the Java page and download the RPM package or by running the below command.

curl -LO -H "Cookie: oraclelicense=accept-securebackup-cookie" \
"https://download.oracle.com/otn-pub/java/jdk/14+36/076bab302c7b4508975440c56f6cc26a/jdk-14_linux-x64_bin.rpm"

Once, the package is downloaded, install it with the help of yum or rpm command.

$ sudo rpm -Uvh jdk-14_linux-x64_bin.rpm
 warning: jdk-14_linux-x64_bin.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
 Verifying…                                                            (10################################# [100%]
 Preparing…                                                            (10################################# [100%]
 Updating / installing…
    1:jdk-14-2000:14-ga                ################################# [100%]

Verify the installation of Java 14 by running

java -version
java version "14" 2020-03-30
 Java(TM) SE Runtime Environment (build 14+36-1461)
 Java HotSpot(TM) 64-Bit Server VM (build 14+36-1461, mixed mode, sharing)

Now, set up the Java environment

cat <<EOF | sudo tee /etc/profile.d/jdk14.sh
 export JAVA_HOME=/usr/java/default
 export PATH=\$PATH:\$JAVA_HOME/bin
 EOF

Then source the file

source /etc/profile.d/jdk14.sh

Step 3: Set Java Version as Default Version

If you’ve installed multiple java version, you can configure them to choose which one is default.

sudo alternatives --config java

So, this is how you can install Java 14 on CentOS8.

The post How To Install Java 14 on CentOS 8 / RHEL 8 appeared first on Linux Windows and android Tutorials.