For example, change the default Java version, run the update-alternatives command: We can use symbolic links to setup the default Java version. $ sudo apt install openjdk-11-jdk Setting up the default Java version For example, here I am going to install OpenJDK 11: It allows us to run different apps as per the Java version. We can install multiple versions on Ubuntu.

OpenJDK 64-Bit Server VM (build 14.0.1+7-Ubuntu-1ubuntu1, mixed mode, sharing) Step 3 – Install multiple versions of Java/OpenJDK OpenJDK Runtime Environment (build 14.0.1+7-Ubuntu-1ubuntu1) $ java -version openjdk version '14.0.1'

Installing OpenJDK version 14 on Ubuntu server Step 2 – Verification $ sudo apt install openjdk-14-jdk-headless Update the repo and then install the OpenJDK version 14 using the apt command: Step 1 – Installing OpenJDK version 14 on Ubuntu 20.04 LTS The headless version is for server users where you don’t need desktop GUI components of JAVA. Openjdk-14-jre-zero - Alternative JVM for OpenJDK, using Zero Openjdk-14-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) Openjdk-14-jre - OpenJDK Java runtime, using Hotspot JIT Openjdk-14-jdk-headless - OpenJDK Development Kit (JDK) (headless) Openjdk-14-jdk - OpenJDK Development Kit (JDK) Openjdk-13-jre-zero - Alternative JVM for OpenJDK, using Zero Openjdk-13-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) Openjdk-13-jre - OpenJDK Java runtime, using Hotspot JIT Openjdk-13-jdk-headless - OpenJDK Development Kit (JDK) (headless) Openjdk-13-jdk - OpenJDK Development Kit (JDK) Openjdk-11-jre-zero - Alternative JVM for OpenJDK, using Zero Openjdk-11-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) Openjdk-11-jre-dcevm - Alternative VM for OpenJDK 11 with enhanced class redefinition Openjdk-11-jre - OpenJDK Java runtime, using Hotspot JIT Openjdk-11-jdk-headless - OpenJDK Development Kit (JDK) (headless) Openjdk-11-jdk - OpenJDK Development Kit (JDK) Openjdk-8-jre-zero - Alternative JVM for OpenJDK, using Zero/Shark Openjdk-8-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) Openjdk-8-jre - OpenJDK Java runtime, using Hotspot JIT Openjdk-8-jdk-headless - OpenJDK Development Kit (JDK) (headless) $ apt-cache -names-only search 'openjdk-*-(jre|jdk)' | sort -t '-' -k 2 -nĭifferent versions of JDK and JRE available for installation: openjdk-8-jdk - OpenJDK Development Kit (JDK) Let us find out about versions using the apt-cache command and sort command: Ubuntu Linux ships with OpenJDK version 8 and 14.

Jre download ubuntu 14.04