create TableModel and populate jTable dynamically

Question

I want to store the results of reading lucene index into jTable, so that I can make it sortable by different columns. From index I am reading terms with different measures o

Answer 1

When you are inserting, deleting or updating data in your model, you need to notify the GUI of the changes. You can do this with the fire-methods in the AbstractTableModel.

I.e. if you add an element to your list, you also have to call fireTableRowsInserted(int firstRow, int lastRow) so that the visible layer can be updated.

Have a look at addElement(MyElement e) in the code below:

public class MyModel extends AbstractTableModel {

    private static final String[] columnNames = {"column 1", "column 2"};
    private final LinkedList list;

    private MyModel() {
        list = new LinkedList();
    }

    public void addElement(MyElement e) {
        // Adds the element in the last position in the list
        list.add(e);
        fireTableRowsInserted(list.size()-1, list.size()-1);
    }

    @Override
    public int getColumnCount() {
        return columnNames.length;
    }

    @Override
    public int getRowCount() {
        return list.size();
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        switch(columnIndex) {
            case 0: return list.get(rowIndex).getColumnOne();
            case 1: return list.get(rowIndex).getColumnOne();
        }
        return null;
    }

}