JList Java的干净模型

Question

I try to fill a JList but first remove existing elements to avoid repeated records. LLenarGrid that method call on a button to show that is to display objects in arraylist and JList but if I have 5 elements and give twice the button I get 10 doubles me as if I did not clean up the model

I leave my method, if I could help? or that I'm doing wrong, Thanks

public void LlenarGrid()
{

    listapersonas.setModel(new DefaultListModel());
     DefaultListModel listModel = (DefaultListModel)listapersonas.getModel();
     listModel.removeAllElements();
     for (clsPersona d : personas) {
        listModel.addElement(d.RetornaPersona());
    }
    listapersonas.setModel(listModel);
    listapersonas.clearSelection();
}

Answer 1

You do not have to set the model to list multiple times.

you can remove all element using below which you are already doing.

model.removeAllElements();

As suggested by John Bollinger check the personas List.