Question

I have been reading tutorials and I am still not sure so I will ask here. Is it possible to have a JTable with 2 columns where column 1 displays contents of an arraylist and column 2 displays numbers up to the size of the arraylist?. I have looked at tutorials but they dont really mention arraylists, so any sample codes or direction would be helpful. Thanks

Answer 1

Yes, of course it’s possible. Implement a table model by extending AsbtractTableModel, and use the list to implement its methods.

Read the JTable tutorial.

The main methods of the table model would look like this:

public Object getValueAt(int row, int column) {
    if (column == 0) {
        return this.list.get(row);
    }
    else {
        return row;
    }
}

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

public int getColumnCount() {
    return 2;
}