Cannot reload jlist

Question

I have made a file folder that shows the files list in the folder. After I select the folder, it will run the LoadFileList method and the list of files will be displayed in the JList called fileList.
  private void LoadFileList(String path){
        String userDir = path;
        File folder = new File(userDir);
        Vector data = new Vector();
        String[] children = folder.list();
        if (children == null) {
            // Either dir does not exist or is not a directory
        } else {
            for (int i=0; i<children.length; i++) {
             // Get filename of file or directory
             String filename = children;
data.add(filename);
jLabel1.setText(filename);
// updateList(data);
fileList = new JList(data);
fileList.revalidate();
fileList.repaint();
However, the jlist cannot be updated after the folder is selected...I have tried many different method... but still not work..
please give me some advices to solve this.
Thank you.

Answer 1

You don't create a new JList. The object is just added to memory, its not displayed on the GUI.
You need to create a new ListModel and then you use list.setModel(...) to update the existing JList that is visible on the GUI.