Probably NetBeans but: jList RE-populating

Question

This probably is a NetBeans question but maybe you all can help:
I am having difficulty with NetBeans populating a jList anytime after it is initially populated/initialized by the GUI.
Here is code I wrote and added to NetBeans "Post-Adding" code that works fine the first time (and it is way for us humans to interact with the GUI's generated code):
jScrollPane1.setViewportView(jList1);
listModel = new DefaultListModel();
List<String> GUI_ReadFile_ls=new ArrayList<String>();
GUI_ReadFile_ls=RF_Call.ls;
Iterator it=GUI_ReadFile_ls.iterator();
while(it.hasNext())
String value=(String)it.next();
listModel.addElement(value);
//System.out.println("LIST Value from GUI :"+value);
jList1 .setModel(listModel);
That code works fine and populates the list.
(RF_Call is my ReadFile class which reads an ascii text file that is used here to populate the jList).
But I added a button and I want it to read another file and re-populate the same jList.
My button-press code is
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String sTheFile=new String("C:/MyDir/Docs/MyCarData.txt");
RF_Call.LoadFile(sTheFile);
But the jList doesn't get populated.
How do you populate a jList after it has already been populated - and how do you get that displayed?
Thanks,
Matt

Answer 1

jList1.setModel(new javax.swing.AbstractListModel() {
String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
public int getSize() { return strings.length; }
public Object getElementAt(int i) { return strings; }
jScrollPane1.setViewportView(jList1);
listModel = new DefaultListModel();
List<String> GUI_ReadFile_ls=new ArrayList<String>();
GUI_ReadFile_ls=RF_Call.ls;
Iterator it=GUI_ReadFile_ls.iterator();
while(it.hasNext())
String value=(String)it.next();
listModel.addElement(value);
//System.out.println("LIST Value from GUI :"+value);
jList1 .setModel(listModel);
Oh, man the code markers didn't work that time either.
Now Kevin will really be pissed.
I'll post that as a separate question as well.
Matt