Look at this link it will help you http://docs.oracle.com/javase/tutorial/uiswing/components/table.html and the code : http://docs.oracle.com/javase/tutorial/uiswing/examples/components/TableRenderDemoProject/src/components/TableRenderDemo.java
The example by camickr is probably a more reusable solution, but for the sake of education… Rendering of cells is the domain of the view Model’s should never contain components, especially if you’re thinking about rendering them to the screen, this is simply the wrong approach to take… You need to set up a TableCellEditor … Read more
Working from this complete example as a common frame of reference, note how the appearance of unselected cells in the ITEM_COL column is due to the default renderer. The arrow button typical of a stand-alone JComboBox only appears when the cell’s editor is evoked, as by clicking on the cell or pressing Space when the … Read more
Gotta love code from the internet…oh… The code you have violates the singe thread rules of Swing and thus, is a bad example. You have a number of options with SwingWorker. You could publish the progress and use the process method to update the progress bar or you could use a PropertyChangeListener and monitor progress … Read more
only example, everything is hardcoded, for good understanding EDIT: as kleopatra’s noticed, moved JTable#fireTableDataChanged() from ActionListener to the TableModel, amended all ClassNames start with lowerCase import java.awt.*; import java.awt.event.*; import java.util.EventObject; import javax.swing.*; import javax.swing.table.*; public class ComponentTableTest { private JFrame frame; private JTable CompTable = null; private CompTableModel CompModel = null; private JButton addButton … 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
When your editor concludes, the table’s editingStopped() method collects the new value via getCellEditorValue() and uses it to setValueAt() in the model. The model, in turn, should fireTableCellUpdated(), which will invoke the prescribed renderer. Extending the default should be enough to handle Number formatting. In other cases, it may be convenient to use an instance … Read more
It sounds like you are Using a Combo Box as an Editor. If so, the TableCellEditor method, getTableCellEditorComponent(), includes the row as a parameter. There’s a related example here. Addendum: To change a value in the same row you’ve edited, just have the model return the correct value for the “other column” based on the … Read more