Install Maven on Amazon Linux / RHEL

Install Apache Maven on your EC2 instance. First, enter the following to add a repository with a Maven package.

sudo wget https://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo

Enter the following to set the version number for the packages.

sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo

Then you can use yum to install Maven.

sudo yum install -y apache-maven

The Gremlin libraries require Java 8. Enter the following to install Java 8 on your EC2 instance.
```
sudo yum install java-1.8.0-devel
```
Enter the following to set Java 8 as the default runtime on your EC2 instance.
```
sudo /usr/sbin/alternatives --config java
```
When prompted, enter the number for Java 8.
Enter the following to set Java 8 as the default compiler on your EC2 instance.
```
sudo /usr/sbin/alternatives --config javac
```
When prompted, enter the number for Java 8.