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 Removing outdated cached downloads…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.

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