I would recommend taking the following approach: Create a Row class to represent a row read from your ResultSet. This could be a simple wrapper around an Object[]. Create a List<Row> collection, and subclass AbstractTableModel to be backed by this collection. Use a SwingWorker to populate your List<Row> by reading from the underlying ResultSet on … Read more
Invoking setModel() on the table should be sufficient, but you might call fireTableStructureChanged() on the model explicitly as a way to help sort things out. Also, verify that you are working on the event dispatch thread. Addendum: Here’s an sscce that shows the basic approach. import java.awt.Dimension; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JComboBox; … Read more
The TableModel behind the JTable handles all of the data behind the table. In order to add and remove rows from a table, you need to use a DefaultTableModel To create the table with this model: JTable table = new JTable(new DefaultTableModel(new Object[]{“Column1”, “Column2”})); To add a row: DefaultTableModel model = (DefaultTableModel) table.getModel(); model.addRow(new Object[]{“Column … Read more
If you want to notify your JTable about changes of your data, use tableModel.fireTableDataChanged() From the documentation: Notifies all listeners that all cell values in the table’s rows may have changed. The number of rows may also have changed and the JTable should redraw the table from scratch. The structure of the table (as in … Read more
The private static class JTable.GenericEditor uses introspection to catch exceptions raised by constructing specific Number subclasses with invalid String values. If you don’t need such generic behavior, consider creating PositiveIntegerCellEditor as a subclass of DefaultCellEditor. Your stopCellEditing() method would be correspondingly simpler. Addendum: Updated to use RIGHT alignment and common error code. Addendum: See also … Read more
If isn’t defined for JTable#setSelectionMode(ListSelectionModel.SINGLE_SELECTION), then CTRL + MOUSE_CLICK Or do you mean remember last selected? ListSelectionModel is used by both JTable and JList. import java.awt.Component; import java.awt.event.InputEvent; import java.awt.event.MouseEvent; import javax.swing.*; public class Ctrl_Down_JList { private static void createAndShowUI() { String[] items = {“Sun”, “Mon”, “Tues”, “Wed”, “Thurs”, “Fri”, “Sat”}; JList myJList = new … Read more
that was a tough one Was puzzled that that header didn’t show up on the image at all: it wasn’t clipped or something, it wasn’t painted at all. The reason for that is .. that at the time of painting the panel to the image, the header is no longer part of the hierarchy. When … Read more
In the example below, the TableModel updates a Set<Integer> checked in the implementation of setValueAt(). The model of an adjacent JList listens to the table’s model and displays the currently selected row numbers. The example assumes that the number of selected rows is small compared to the number of rows. Note the use of TreeSet, … Read more
I know thats not the problem tho because everything else shows up just fine Oh… really? Not in my computer… Let’s have a picture of your actual GUI shown in my PC: Does the GUI looks the same in your computer? I bet no. But… why does it looks like that in my PC? Well, … Read more
Because database access is inherently asynchronous, you’ll surely want to retrieve rows in the background to avoid blocking the event dispatch thread; SwingWorker makes this relatively easy. Fetch rows in your implementation of doInBackground(), publish() interim results, and add them to the table model in your implementation of process(). A complete example that outlines the … Read more