DataTransferer.java 文件源码

protected String getBestCharsetForTextFormat(Long lFormat,
    Transferable localeTransferable) throws IOException
{
    String charset = null;
    if (localeTransferable != null &&
        isLocaleDependentTextFormat(lFormat) &&
        localeTransferable.isDataFlavorSupported(javaTextEncodingFlavor)) {
        try {
            byte[] charsetNameBytes = (byte[])localeTransferable
                    .getTransferData(javaTextEncodingFlavor);
            charset = new String(charsetNameBytes, StandardCharsets.UTF_8);
        } catch (UnsupportedFlavorException cannotHappen) {
        }
    } else {
        charset = getCharsetForTextFormat(lFormat);
    }
    if (charset == null) {
        // Only happens when we have a custom text type.
        charset = Charset.defaultCharset().name();
    }
    return charset;
}