Java Swing JTable更改单元格边框

Question

I would like to create a JTable that can change the border color of the outer highlighted cells on the press of a Button.

I already found out how to make the button and get the information for the cells that have to be changed like this:

        frame.add(new JButton(new AbstractAction("Create Border "){ 

        private static final long serialVersionUID = 1L;

        private void createBorder(){
            System.out.println(table.getSelectedColumn());
            System.out.println(table.getSelectedRow());
            System.out.println(table.getSelectedRowCount());
            System.out.println(table.getSelectedColumnCount());
            System.out.println(table.getSelectedRows()[0]);
            System.out.println(table.getSelectedColumns());             

        }

        @Override
        public void actionPerformed(ActionEvent e){
            createBorder();
        }

    }), BorderLayout.SOUTH);
    frame.pack();
    frame.setLocation(150,150);
    frame.setVisible(true);

}

what's left now is to somehow get the individual cells and change their border.

So far i only found solutions for changing the border at the creation of the table through the renderer.

Answer 1

i only found solutions for changing the border at the creation of the table through the renderer.

Another approach might be to overriding the prepareRenderer(...) method of the JTable , so you don't need to create a custom renderer for each type of data.

Check out Table Row Rendering for some examples of this approach. One example shows how to place a border around the entire row instead of each cell.