usage/archetypes/quickstart/src/main/resources/META-INF/maven/archetype-metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
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    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
    with the License.  You may obtain a copy of the License at
    
     http://www.apache.org/licenses/LICENSE-2.0
    
    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
-->
<archetype xmlns="http://maven.apache.org/plugins/maven-archetype-plugin/archetype/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/plugins/maven-archetype-plugin/archetype/1.0.0 http://maven.apache.org/xsd/archetype-1.0.0.xsd">

  <fileSets>
    <fileSet filtered="true" packaged="true">
      <directory>src/main/java</directory>
      <includes>
        <include>**/*.java</include>
      </includes>
    </fileSet>
    
    <fileSet filtered="true" packaged="true">
      <directory>src/test/java</directory>
      <includes>
        <include>**/*.java</include>
      </includes>
    </fileSet>
    
    <!-- we cannot have src/main/resources/** be "packaged" (package dirs prepended) and non-packaged;
         so we put everything non-packaged here.
         (also note for src/main/java, the root pom uses google-replacer to drop the "package" directory) -->
           
    <fileSet filtered="false" packaged="false">
      <directory></directory>
      <includes>
        <include>**/*.png</include>
        <include>**/*.sh</include>
      </includes>
    </fileSet>
    <fileSet filtered="true" packaged="false">
      <directory></directory>
      <includes>
        <include>**/*</include>
        <include>*</include>
      </includes>
      <excludes>
        <exclude>src/main/java/**</exclude> 
        <exclude>src/test/java/**</exclude> 
        <exclude>pom.xml</exclude>
        <exclude>**.png</exclude>
        <exclude>**.sh</exclude>
      </excludes>
    </fileSet>
  </fileSets>

</archetype>