Sometimes I have trouble with using:

sudo yum install maven

and it would either install correctly or install the wrong version of Maven. I usually only have this problem on my VMs that run Centos. So I am going to keep a recording of how I install Maven here for me in the future when I inevitably forget.

Making sure Java is installed correctly

I like to really make sure Java is installed correctly. What this means is I install everything Java jdk related for my purposes.

sudo yum install java-1.8.0-openjdk* -y

This will install anything that openjdk has to offer. Just to make sure you really got it done.

Then what I like to do is make sure I have the enviroment variable $JAVA_HOME set up because some programs use it and assume that it is already set. First you’re gonna need to edit your ~/.bashrc file. If you don’t have one then make it with the touch command. Once you are sure that you have the file add these to the end of the file:

JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk

export PATH=$JAVA_HOME/bin:$PATH

. ~/.bashrc

Then run echo $JAVA_HOME to make sure the that it worked.

Boom, there you go. Java should be installed correctly.

Installing Maven

Go to /usr/local/src and download Maven cd /usr/local/src

wget http://www-us.apache.org/dist/maven/maven-3/3.5.2/binaries/apache-maven-3.5.2-bin.tar.gz

Extract the tar file

tar -xf apache-maven-3.5.2-bin.tar.gz

Then rename the directory

mv apache-maven-3.5.2/ apache-maven/

Go to /etc/profile.d directory to create a new config file cd /etc/profile.d

sudo vim maven.sh

Then paste this:

# Apache Maven Environment Variables
# MAVEN_HOME for Maven 1 - M2_HOME for Maven 2
export M2_HOME=/usr/local/src/apache-maven
export PATH=${M2_HOME}/bin:${PATH}

Now you have to make maven.sh executable then source the file:

sudo chmod +x maven.sh

. /etc/profile.d/maven.sh

Test that it is running correctly by running mvn -version