Add an entry to a JList ?

Question

What is the simplest way to add another item, in my case a string, to a jlist? Thanks!

Answer 1

It was a pain in the rump trying to figure this one out, so I sympathize with your quest to figure out how to add things to JLists.
Try this:
( (DefaultListModel) myList.getModel() ).add(new String("hello, this is a new entry!"));This assums that your JList uses DefaultListModel as its ListModel, and automatically class-casts it to that, because the original JList getModel() method does not return a DefaultListModel - even though it IS the default list model. Just a quick tip!
Also, be sure to remember that you can add ANY Object to your JList. How it is "shown" in the JList depends on your Object's toString() method.
So if I have an Object called Entry...
public class Entry {
   private String textualRepresentation = "AnEntry";
   public Entry() { }
   public String toString() {
      return textualRepresentation;
}And add it to my JList via...
Entry entry = new Entry();
( (DefaultListModel) myList.getModel() ).add(entry);The JList will now have an item listed as "AnEntry", which is actually our Entry object.
Note that the JList will not update its display when you add the new Object.
To do this, you can either manually click on the list to change its selection, forcing a repaint, or resizing the window (accomplishing the same goal), or doing this:
SwingUtilities.updateComponentTreeUI(myList);Best of luck!