CDI: beans.xml, where do I put you?

For EJB and JAR packaging you should place the beans.xml in src/main/resources/META-INF/.

For WAR packaging you should place the beans.xml in src/main/webapp/WEB-INF/.

Remember that only .java files should be put in the src/main/java and src/test/java directories. Resources like .xml files should be in src/main/resources.

Just to complement the above answer, here is an official reference on this: https://docs.oracle.com/javaee/6/tutorial/doc/gjbnz.html

quote:

An application that uses CDI must have a file named beans.xml. The file can be completely empty (it has content only in certain limited situations), but it must be present. For a web application, the beans.xml file must be in the WEB-INF directory. For EJB modules or JAR files, the beans.xml file must be in the META-INF directory.