Install Java Commands
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sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt install oracle-java8-installer
sudo apt install oracle-java8-set-default
Install Maven Commands
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cd /opt/
sudo wget https://downloads.apache.org/maven/maven-3/3.5.3/binaries/apache-maven-3.5.3-bin.tar.gz
sudo tar -xf apache-maven-3.5.3-bin.tar.gz
sudo mv apache-maven-3.5.3/ apache-maven/
sudo update-alternatives --install /usr/bin/mvn maven /opt/apache-maven/bin/mvn 1001
Configuring Apache Maven Environment
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$ cd /etc/profile.d/
$ sudo gedit maven.sh
###################################################
# Apache Maven Environment Variables
# MAVEN_HOME for Maven 1 - M2_HOME for Maven 2
export JAVA_HOME=/usr/lib/jvm/java-8-oracle
export M2_HOME=/opt/apache-maven
export MAVEN_HOME=/opt/apache-maven
export PATH=${M2_HOME}/bin:${PATH}
sudo chmod +x maven.sh
sudo source maven.sh