To generate Java sources from a single XML schema named schema.xsd (located at the default location, i.e. src/main/castor) using the Maven plugin for Castor, simply define a plugin configuration as follows:
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>castor-maven-plugin</artifactId>
<version>2.0</version>
<configuration>
<schema>src/main/castor/schema.xsd</schema>
</configuration>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
...
</build>
...
</project>