How to use

WindowImpl$DecorationAction

in

jogamp.newt

@Override
public final void setUndecorated(final boolean value) {
  if( isNativeValid() ) {
    if( !isReconfigureMaskSupported(STATE_MASK_UNDECORATED) ) {
      return;
    }
    if( isFullscreen() ) {
      stateMaskNFS.put(STATE_MASK_UNDECORATED, value);
      return;
    }
  }
  runOnEDTIfAvail(true, new DecorationAction(value));
}
@Override

@Override
public final void setUndecorated(final boolean value) {
  runOnEDTIfAvail(true, new DecorationAction(value));
}