A webjar for Materialize in 1.0.0.rc-2 has been recently added (Jul 03, 2018) on org.webjars.bower but it seems it can't be downloaded.
In Eclipse or Intellij maven can't find the artifact.
Missing artifact org.webjars.bower:materialize:jar:1.0.0-rc.2
As the artifact seems to be available on this url : https://mvnrepository.com/artifact/org.webjars.bower/materialize/1.0.0-rc.2, and on https://www.webjars.org/, why it can't be downloaded?
Extract from the pom.xml :
<dependency>
<groupId>org.webjars.bower</groupId>
<artifactId>materialize</artifactId>
<version>1.0.0-rc.2</version>
</dependency>
PS: I am pretty sure it's not a configuration problem on maven, as I don't have any problems with others webjars (for example with jquery).
EDIT: it was a wrong network configuration (proxy, password)
It was a network issue : the password was recently changed but not in the proxy configuration.