JTable duplicate values in row

Question

I have a JTable populated with a custom DataModel (pasted below) and when I call the populate() method, it appears to populat

Answer 1

You could try to make the changes of populate more atomic.

public void populate(Collection c) {
    ArrayList> data2 = new  ArrayList>();
    for(Item i : c.getItems()) {
        ArrayList row = new ArrayList();
        for(Property p : i.getProperties().values()) {
            row.add(p.toString());
        }
        data2.add(row);
    }
    data = data2;
    fireTableDataChanged();
}

I am guessing that populate is called again before a prior populate call finished. And probably c is changed during its iteration.