Adding files to jlist

Question

hi,
i trying to add File objects to a JList can keep getting a nullpointer exception, here is the code:
private DefaultListModel listModel;
File file = new File("c:");
File[] files = file.listFiles();
addToListModel(files);
fileList = new JList(files);
public void addToListModel(File[] list) {
     System.out.println("lenght is " + list.length);
     System.out.println(list[0]);
     for(int i = 0; i < list.length; i++) {
          listModel.addElement(list);
i put a println in the method, it print 5 as the lenght and does output the first value in the array, but then throws the nullpointer excpetion, any ideas?
Thank you.

Answer 1

Are you sure you created listModel? I don't see
listModel = new DefaultListModel()in your sample? If you didn't it would be null.