title: Maven build excluding all files rather than java files
body: <p>I have created a maven project using <code>maven-archetype-quickstart</code> artifact. And got a directory structure like this :</p>
  
  <pre><code>my-app
  +src
  ++main
  +++java
  ++++com
  +++++mycompnay
  ++test
  </code></pre>
  
  <p>Now, the problem is, when I put a file in java folder which is not a <code>*.java</code> files it is not getting included in the jar file after executing <code>mvn clean install</code>.</p>
  
  <p>Here is the directory structure after adding those files using <code>jar tf target/my-app-1.0-SNAPSHOT.jar</code>:</p>
  
  <pre><code>my-app
  +src
  ++main
  +++java
  ++++com
  +++++mycompnay
  ++++++app
  +++++++Blabla.java
  +++++++Blabla.properties
  ++test
  </code></pre>
  
  <p>Here is the content of the jar file in target folder :</p>
  
  <pre><code>META-INF/
  META-INF/MANIFEST.MF
  com/
  com/mycompany/
  com/mycompany/app/
  com/mycompany/app/Blabla.class
  META-INF/maven/
  META-INF/maven/com.mycompany.app/
  META-INF/maven/com.mycompany.app/my-app/
  META-INF/maven/com.mycompany.app/my-app/pom.xml
  META-INF/maven/com.mycompany.app/my-app/pom.properties
  </code></pre>
  
  <p>How can I include the properties file in the jar?</p>