当用户单击标题时，如何防止对Java Swing JTable列进行排序？

Question

I have a JTable that has several columns. I wanted to make some of the columns unsortable. How do I do it? I am stuck using Java 1.4 so using TableRowSorter isn't an option since it wasn't introduced until 1.6.

Answer 1

• apply RowSorter to the desired column(s) only

• replace in post

(for example, only pseudo_code, everything is there hardcoded as example, have to override columns from ColumnModel)

if (column >= 0 && column < getModelWrapper().getColumnCount() 
    && isSortable(column)) {

with

if (column >= 0 && column <=1  /*getModelWrapper().getColumnCount()*/ 
    && isSortable(column)) {

in public void toggleSortOrder(int column) {

then second column isn't sortable

• if not help you for better help sooner post an SSCCE demonstrated your issue

Answer 2

Set the rowSorter on the JTable to null. See http://download.java.net/jdk7/archive/b123/docs/api/javax/swing/JTable.html#setRowSorter(javax.swing.RowSorter )

Answer 3

If you want to sort some and not others, you'll have to implement a listener. I've used something like this:

table.getTableHeader().addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            int col= table.getTableHeader().columnAtPoint(e.getPoint());
            // column number col has been clicked -- sort if necessary,
            // discard the event if sorting is not desired.
            //
        }

    });

Watch out for tables that can drag and drop rows; you can disable this with

table.getTableHeader().setReorderingAllowed(false);