ClipboardTransferable.java 文件源码

@Override
public Object getTransferData(DataFlavor flavor)
    throws UnsupportedFlavorException, IOException
{
    if (!isDataFlavorSupported(flavor)) {
        throw new UnsupportedFlavorException(flavor);
    }
    Object ret = flavorsToData.get(flavor);
    if (ret instanceof IOException) {
        // rethrow IOExceptions generated while fetching data
        throw new IOException("Exception fetching data: ", (IOException)ret);
    } else if (ret instanceof DataFactory) {
        // Now we can render the data
        DataFactory factory = (DataFactory)ret;
        ret = factory.getTransferData(flavor);
    }
    return ret;
}