Install Java 11 and Maven on Ubuntu Linux

In this short tutorial I will show you how to prepare your environment for Java 11 and Maven on Ubuntu for Linux.

Install

Update your package manager and install OpenJDK 11:

sudo apt update
sudo apt install openjdk-11-jdk -y

Verify that Java is installed:

$ java -version
openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04)
OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing)

Once Java is installed, we can install Maven, first switch to the root user:

$ sudo su

I will be using maven version 3.6.2, so adjust accordingly:

$ MAVEN_HOME="/opt/maven"
$ MAVEN_VERSION=3.6.3
$ MAVEN_CONFIG_HOME="/root/.m2"

Create the directories, then download maven and extract:

$ mkdir -p $MAVEN_HOME
$ curl -LSso /var/tmp/apache-maven-$MAVEN_VERSION-bin.tar.gz https://apache.org/dist/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz
$ tar xzvf /var/tmp/apache-maven-$MAVEN_VERSION-bin.tar.gz -C $MAVEN_HOME --strip-components=1
$ rm /var/tmp/apache-maven-$MAVEN_VERSION-bin.tar.gz
$ update-alternatives --install /usr/bin/mvn mvn /opt/maven/bin/mvn 10000
$ mkdir -p $MAVEN_CONFIG_HOME

Set the environment variables for maven:

$ cat /etc/profile.d/custom.sh
#!/bin/bash
export MAVEN_HOME="/opt/maven"
export MAVEN_VERSION=3.6.3
export MAVEN_CONFIG_HOME="/root/.m2"

Then make the file executable:

$ chmod +x /etc/profile.d/custom.sh

Verify that maven is installed:

$ mvn -version
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /opt/maven
Java version: 11.0.11, vendor: Ubuntu, runtime: /usr/lib/jvm/java-11-openjdk-amd64
Default locale: en, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-1041-aws", arch: "amd64", family: "unix"

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