title: Java 8 option can't be unselected in Codename One?
body: <p>A user of codename One meets this error:</p>
  <pre><code>Updating property file: C:\Users\user\Documents\NetBeansProjects\Rim Karaki CV Mobile Apps\build\built-jar.properties
  
  Compile is forcing compliance to the supported API's/features for maximum device compatibility. This allows smaller
  
  code size and wider device support
  
  Compiling 3 source files to C:\Users\user\Documents\NetBeansProjects\Rim Karaki CV Mobile Apps\build\tmp
  
  javac: invalid target release: 1.8
  
  Usage: javac &lt;options&gt; &lt;source files&gt;
  
  use -help for a list of possible options
  
  C:\Users\user\Documents\NetBeansProjects\Rim Karaki CV Mobile Apps\build.xml:50: Compile failed; see the compiler error output for details.
  
  BUILD FAILED (total time: 1 second)
  </code></pre>
  <p>I was advising to uncheck the &quot;Java 8 project&quot; setting at the creation stage of the project, but the user can't actually unselect the option:</p>
  <p><a href="https://i.stack.imgur.com/X3SJJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/X3SJJ.png" alt="enter image description here" /></a></p>
  <p>I don't get it, what can be the issue here?</p>