title: Gradle - compileJava - remove compile Warnings
body: <p>We use Gradle 2.1 and java plugin. During compileJava different warnings occur, for example:</p>
  
  <pre><code>warning: [options] bootstrap class path not set in conjunction with -source 1.7
  Note: ../SomeClass.java uses or overrides a deprecated API.
  </code></pre>
  
  <p>We know what they mean but won't fix them (don't ask, other thread :)  Is there a way to avoid these messages somehow? They disturb the output a lot:</p>
  
  <pre><code>:project1:compileJava
  warning: [options] bootstrap class path not set in conjunction with -source 1.7
  Note: SomeClass.java uses or overrides a deprecated API.
  Note: Recompile with -Xlint:deprecation for details.
  1 warning
  :project1:processResources
  :project1:classes
  :project1:jar
  :project2:compileJava
  warning: [options] bootstrap class path not set in conjunction with -source 1.7
  1 warning
  :project2:processResources
  :project2:classes
  :project2:jar
  :project2:war
  </code></pre>
  
  <p>Isn't is possible for example to redirect the stderr stream during compileJava so that we can grep out the warnings?
  Or is there another way?</p>