How can I sort Columns by Row values?

Question

There are [too] many examples online of how to sort the Rows of a JTable by Column values.

Currently I am doing this by implementing AbstractTableModel and overridding getColumnClass to return the actual class of the data. Then calling setAutoCreateRowSorter .

How can I sort the Columns in a JTable by Row values?

Answer 1

1) extract all value from TableHeader to the shortable Array (could be method in AbstractTableModel )

2) loop inside array and call

TableColumn column = table.getColumnModel().moveColumn(columnIndex, newIndex);

3) for all methods that used Model vs View (and vice versa) is required add

table/model#convertXxxIndexToXxx

4) for reset you have to create method in AbstractTableModel by calling

fireTableDataChanged(); or fireTableStructureChanged(); // not sure in this case

5) notice about above two fireTableXxxXxx

This can be a problem if you have added any custom renderers or editor to 
the table as you would lose them (by @camickr)

Answer 2

Just define and set the RowSorter on your JTable. Here's a simple tutorial:

http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#sorting

Answer 3

您可以通过单击列标题对值进行排序（如果您要这样）。