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POCopy data from JTable as HTML
 

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    <p>JTable's default TransferHandler exports data in tab-delimited format. I'm trying to create my own TransferHandler that will export the data as an HTML table, but currently <em>nothing</em> gets copied to the clipboard when I use it. How can I add this feature?</p> <p>Currently I'm adding the following TransferHandler to my table using <code>table.setTransferHandler(new TableTransferHandler());</code>:</p> <pre><code>public class TableTransferHandler extends TransferHandler { final static Logger logger = LoggerFactory.getLogger("TableTransferHandler"); @Override protected Transferable createTransferable(JComponent comp) { JTable table = (JTable) comp; logger.debug("creating table selection transferable"); return new TableSelection(table); } } </code></pre> <p><code>TableSelection</code> Transferable:</p> <pre><code>public class TableSelection implements Transferable { final static Logger logger = LoggerFactory.getLogger("TableSelection"); private static DataFlavor HTML_TEXT; private static final List&lt;DataFlavor&gt; flavors = new ArrayList&lt;DataFlavor&gt;(); private JTable table; public TableSelection(JTable table) { this.table = table; } @Override public boolean isDataFlavorSupported(DataFlavor flavor) { return flavors.contains(flavor); } @Override public DataFlavor[] getTransferDataFlavors() { return flavors.toArray(new DataFlavor[0]); } @Override public Object getTransferData(DataFlavor flavor) throws IOException, UnsupportedFlavorException { if (flavor.equals(HTML_TEXT)) { StringBuilder sb = new StringBuilder("&lt;table&gt;"); int[] rows = table.getSelectedRows(); int[] cols = table.getSelectedColumns(); for (int row : rows) { int col_index = 0; sb.append("&lt;tr&gt;&lt;td&gt;"); for (int col : cols) { Object value = table.getValueAt(row, col); if (value != null) sb.append(value.toString()); if (col_index + 1 &lt; cols.length) sb.append("&lt;/td&gt;&lt;td&gt;"); } sb.append("&lt;/td&gt;&lt;/tr&gt;\n"); } sb.append("&lt;/table&gt;"); return sb.toString(); } else { throw new UnsupportedFlavorException(flavor); } } static { try { HTML_TEXT = new DataFlavor("text/html;class=java.lang.String"); flavors.add(HTML_TEXT); } catch (ClassNotFoundException e) { logger.error("Couldn't create HTML_TEXT flavor", e); } } } </code></pre>
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    1. COWhat do you mean with nothing gets copied to the clipboard. Is your transferable not created ? And how do you expect this will work. Your transferable contains only one dataflavor, which is private. So how will anybody retrieve the data from your transferable if they do not have access to the flavor ?
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    2. COAfter CTRL+C on the table, I get previously copied text rather than data from the table. I could be going about this all wrong as this is my first attempt to use TransferHandlers.
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    3. COI thought the [default handler](http://docs.oracle.com/javase/1.5.0/docs/guide/swing/1.4/dnd.html#DefaultTransferHandlerSupport) did this, but setting `setDragEnabled(true)` copied plain text.
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