Can't navigate a JTable by the arrow keys after using setRowSelectionInterval(int, int)

I'm extending JTable and I have a populateData() method that I'm using to load data into the table model. In this method I'm using:

setRowSelectionInterval(tableRow, tableRow);

And it is working as I want it to, which is to highlight the first row. But there is one problem: I cannot move the selection to the next row by the down arrow key. I have to click on any row (even the one that is highlight开发者_运维知识库ed) with the mouse to be able to navigate by the arrow keys.

void populateData(Collection<Book> b) {
   myModel.populateData(b);
   if (myModel.getRowCount() > 0) {
      setRowSelectionInterval(0, 0);
   }
}

Note: I'm enabling only row selections. Column and cell selections are disabled.

Any ideas how to fix this?

Thanks in advance.

I would guess focus in not on the table so it doesn't react to key presses. You may need to add:

table.requestFocusInWindow();

If this doesn't work the instead of setRowSelectionInterval(...) try using:

table.changeSelection(0, 0, false, false);