Question

I am using the ComboBox in LWUIT.
My code goes like this.

public Locations(String name, int X, int Y)
{
    Name = name;
    xLocation = X;
    yLocation = Y;
}

I have made a list of Locations

private List getLocations()
{
    List list = new List();
    list.addItem(new Locations("Landmark1", 23, 40));
    list.addItem(new Locations("Landmark3", 24, 40));
    list.addItem(new Locations("Landmark4", 25, 40));
    list.addItem(new Locations("Landmark6", 26, 40));

    return list;
}

Then made the ComboBox contain the List.

comboBox_Locations = new ComboBox(getLocations().getModel());

Now, my problem is that how can I display only the Name of the Location on the ComboBox?
I know I can make a list of strings of the Name of the Location like this:

private List getLocations()
{
    List list = new List();
    list.addItem(new Locations("Landmark1", 23, 40).Name);
    list.addItem(new Locations("Landmark3", 24, 40).Name);
    list.addItem(new Locations("Landmark4", 25, 40).Name);
    list.addItem(new Locations("Landmark6", 26, 40).Name);

    return list;
}

But when I get the selectedItem, it only gets the Name and I cannot get the coordinates.
What I wanted to do is to get the class like this:

Object item =  comboBox_Locations.getSelectedItem();
            if (item.getClass() == Locations.class) 
            {
                String Name = ((Locations)item).Name.toString();
                int xCoords = ((Locations)item).getX();
                int yCoords = ((Locations)item).getY();
            }

So that I can use the xCoords and yCoords.

Answer 1

Use a renderer:

list.setRenderer(new DefaultListCellRenderer() {
    public Component getCellRendererComponent(Component list, Object model, Object value, int index, boolean isSelected) {
        String t = ((Locations)value).getName();
        return super.getCellRendererComponent(list, model, t, index, isSelected);
    }
 });