title: warning when i am generating .jar
body: <p>I have this warning:</p>
  
  <pre><code>   warning: Supported source version 'RELEASE_6' from annotation processor
     org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor' less than -source
     '1.7'
     Note: Creating non-static metadata factory ...
     Note: Found Option : eclipselink.canonicalmodel.use_static_factory, with value: false
     Note: Optional file was not found: META-INF/orm.xml continuing with generation.
     Note: Optional file was not found: META-INF/eclipselink-orm.xml continuing with
     generation.
     Note: Found Option : eclipselink.canonicalmodel.use_static_factory, with value: false
     Note: Optional file was not found: META-INF/orm.xml continuing with generation.
     Note: Optional file was not found: META-INF/eclipselink-orm.xml continuing with
     generation.
     warning: The following options were not recognized by any processor:
     '[eclipselink.canonicalmodel.use_static_factory]'
     Note: Some input files use unchecked or unsafe operations.
     Note: Recompile with -Xlint:unchecked for details.
     1 warning
     Copying 5 files to E:\NetBeansProjects\votaciones\build\classes
     compile:
     Created dir: E:\NetBeansProjects\votaciones\dist
     Copying 1 file to E:\NetBeansProjects\votaciones\build
     Copy libraries to E:\NetBeansProjects\votaciones\dist\lib.
     Building jar: E:\NetBeansProjects\votaciones\dist\votaciones.jar
     To run this application from the command line without Ant, try:
     java -jar "E:\NetBeansProjects\votaciones\dist\votaciones.jar"
     jar:
  BUILD SUCCESSFUL (total time: 8 seconds)
  </code></pre>
  
  <p>what happen?</p>