title: How to resolve "javadoc: warning - Multiple sources of package comments found for package a.b.c"?
body: <p>I am very much outdated, but I have just upgraded my project to use JDK 1.5 from JDK 1.4, and now when running <code>mvn javadoc:javadoc</code>, I encounter the following javadoc warnings:</p>
  
  <pre><code>[WARNING] javadoc: warning - Multiple sources of package comments found for package "com.a"
  [WARNING] javadoc: warning - Multiple sources of package comments found for package "com.b"
  [WARNING] javadoc: warning - Multiple sources of package comments found for package "com.c"
  [WARNING] javadoc: warning - Multiple sources of package comments found for package "com.a"
  </code></pre>
  
  <p>What do I need to do to fix them?  Has anything changed from JDK 1.4 to 1.5?</p>
  
  <p>Thanks!</p>