jcombobox as cell editor java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location

Question

I am using a custom JComboBox as a cell editor in a JTable. When the users gets to the cell using keyboard controls it tries to open the popup. This causes the following e

Answer 1

If you embed your instruction inside a try .. catch instruction , your program will run without problems:

SwingUtilities.invokeLater(new Runnable(){

                        public void run()
                        {
                        try {
                        tInput.putClientProperty("JComboBox.isTableCellEditor", Boolean.TRUE);
                        tInput.showPopup();
                        }
                        catch   (IllegalComponentStateException e) {
                                return;
                                }

                          }
                 });