JTable not refreshing

Please post code

You need to ensure your model fires the appropriate TableModelEvent when it is updated.
AbstractTableModel provides methods for firing events.

Ive nested the JTable inside a JPanel then added the JPanel

public class mytable2 extends JPanel {
    private boolean DEBUG = true;
      final LinkedList[] ldata;
      final int len; //variable for how many rows...
      lsearch2 lsch2;
      MyTableModel myModel;
      public JTable table;
      

  public mytable2(LinkedList[] a, int lnth, lsearch2 lschh) {
            super(new BorderLayout());
            ldata = a;
            len = lnth;
            lsch2 = lschh;
        myModel = new MyTableModel();
        table = new JTable(myModel);
        myModel.fireTableDataChanged();

      table.setPreferredScrollableViewportSize(new Dimension(500, 70));
             JScrollPane scrollPane = new JScrollPane(table);
             add(scrollPane, BorderLayout.CENTER);
 
               ...

how do you update it?

> myModel.fireTableDataChanged();

Thats not necessary there.

You just need to fire an event when a change is made to the mode, and it's probablt also best done from within your table model.

heres the rest of it..      


      class MyTableModel extends AbstractTableModel {
            final String[] columnNames = {"cust_id", "cust_contact", "business_name", "cust_email", "Select?"};

        public int getColumnCount() {
            return columnNames.length;
        }
     
        public int getRowCount() {
            return len;
        }

        public String getColumnName(int col) {
            return columnNames[col];
        }

        public Object getValueAt(int row, int col) {
            return ldata[col].get(row);
        }

        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }

        public boolean isCellEditable(int row, int col) {
            if (col < 1) {
                return false;
            } else {
                return true;
            }
        }

            public void setValueAt(Object value, int row, int col) {
                  if (DEBUG) {
                        //System.out.println("Setting value at " + row + "," + col + " to " + value + " (an instance of " + value.getClass() + ")");
                  }
                  ldata[col].remove(row);
                  ldata[col].add(row, value);
                  //fireTableCellUpdated(row, col);
            if (DEBUG) {
                printDebugData();
                ud(row, col);
            }
        }
       
        public void fire() {
                  if (DEBUG) {
                        //System.out.println("Setting value at " + row + "," + col + " to " + value + " (an instance of " + value.getClass() + ")");
                  }
                  Object temp = ldata[1].get(0);
                  ldata[1].remove(0);
                  ldata[1].add(0, temp);
                  fireTableCellUpdated(0, 1);
            if (DEBUG) {
                printDebugData();
                //ud(row, col);
            }
        }
       
        private void ud(int row, int col) {
              if (col != 4) {
                    lsch2.update("UPDATE customer SET " + getColumnName(col) + " = '" + ldata[col].get(row) + "' WHERE cust_id = '" + ldata[0].get(row) + "';");       
                        lsch2.loadselected((String)ldata[0].get(row));
                        ldata[4].remove(row);
                        ldata[4].add(0, new Boolean(true));
                        fireTableCellUpdated(row, 4);
                  }
        }

        private void printDebugData() {
            int numRows = getRowCount();
            int numCols = getColumnCount();

         for (int i=0; i < numRows; i++) {
                //System.out.print("    row " + i + ":");
                for (int j=0; j < numCols; j++) {
                    //System.out.print("  " + ldata[j].get(i));
                }
                //System.out.println();
            }
//            System.out.println("--------------------------");
        }
    }
}

>  //fireTableCellUpdated(row, col);

why is this commented out?

Looks perhaps like you update ladat outside of MyTableModel. If you are doing this then you need to ensure you fire the appropriate event.

Can you post the code that actually adds data to the table.

> ldata[col].remove(row);
> ldata[col].add(row, value);

More efficient to do:

ldata[col].set(row, value);

yup that fixed it.. =)

Its still not showing initially tho =(

     private void getnewmytable2() {
            
            //System.out.println("accessing info from lsch");
            LinkedList[] d = lsch2.getobjects();

            if (d != null && lsch2.getnumber() != -1) {
                  //System.out.println("d not null");
                  if (tables.get(0) != null) {
                        remove((mytable2)tables.get(0));
                        repaint();
                        tables.remove(0);
                  }
                  final mytable2 mt = new mytable2(d, lsch2.getnumber(), lsch2);
                  tables.add(0, mt);
                  add((mytable2)tables.get(0), BorderLayout.CENTER);

                  mt.show();  //??
                  mt.repaint(); //??
                  mt.myModel.fireTableDataChanged();
                  //mt.table.selectAll(); //??
                  //mt.myModel.fire();  //??
                  //mt.table.setValueAt(mt.table.getValueAt(0,1), 0, 1); //??
            
                  
            }
            else {
                  //System.out.println("not getting d from lsch");
                  JOptionPane.showMessageDialog(null, "");
            }

      }      

Thank you!

No worries ;-)

http://www.objects.com.au