The follow step is what I recently used to install maven in openSUSE.
1. Browse to the maven website, and right click copy the link, and from your terminal download by using wget
wget http://mirrors.ibiblio.org/apache/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.gz
2. Extract the compressed file.
tar -xvzf apache-maven-3.3.3-bin.tar.gz
3. Copy the file to /opt/ folder
mv apache-maven-3.3.3/ /opt/
4. Export the environment path
cd $home
vi .bashrc
export PATH=$PATH:/opt/apache-maven-3.3.3/bin
5. Reload setting
source .bashrc
6. Test maven installed
mvn -version
OpenSUSE install maven