Android : Works in Eclipse, Error in Android Studio

Sorry, I'm not very experienced with either environment and apologize if this is a simple issue:

I'm porting code from Eclipse to Android Studio that includes lots or overrides, such as this

   @Override
  public void onConfigurationChanged (Configuration newConfig) {
      super.onConfigurationChanged(newConfig);
  }

When trying to run the code, every one of these gives me an "error: ';' expected", with the Gradle Console pointing at the space right before the opening parenthesis (i.e., before "(Configuration newConfig)"). When pointing at "@Qverride", I also get a "Annotations are not allowed here" hint.

Any ideas why this is happening? Would appreciate your help!