!7

import java.awt.datatransfer.*;
import java.awt.dnd.*;

p-substance {
  final JLabel label = jCenteredLabel(randomID(20));
  showFrame(label);
  
  TransferHandler th = new TransferHandler {
    @Override
    public int getSourceActions(JComponent c) {
        return COPY;
    }

    @Override
    protected Transferable createTransferable(JComponent c) {
      return new StringSelection(getText(label));
    }
  };
  
  label.setDragEnabled(true);
  label.setTransferHandler(th);
}

Began life as a copy of #1007215