<div>
What type of ListModel do you have? Do<br />

<pre><code class="code-1 nolinks" id="code-261042"><span>System.out.println(yourList.getModel().getClass());</span>
</code></pre>
</div>


<div>
I got this:<br />
<br />
class mypackage.myclass$5<br />

</div>


<div>
&gt; Please explain why I can't cast getModel() of jList to DefaultListModel<br />
<br />
because the default model used is not a DefaultListModel.<br />
<br />
You need to explicitly create one.<br />
Which has the added advantage that you can access it without accessing the list <br />
<br />

</div>


<div>
create DefaultListModel and set that are the model to the list. then you can add/remove items from the model!
</div>


<div>
@objects,<br />
this type of changes on Object creation is not allowed in NetBeans
</div>


<div>
here is the example!<br />
<br />
<a href="http://java.sun.com/docs/books/tutorial/uiswing/components/list.html#mutable" rel="ugc">http://java.sun.com/docs/books/tutorial/uiswing/components/list.html#mutable</a>
</div>


<div>
In your visual editor, you should probably choose a normal ListModel such as DefaultListModel
</div>


<div>
you can do it, just set your model after the initComponents() is called<br />
<br />
list.setModel(model);<br />
<br />

</div>


<div>
Thank you all, I got a lot of replies in 2 min and problem is solved! Thanks all...<br />
<br />
Actually, what all said is correct, but I did what CEHJ said, I modified initializecomponent part and added a model which I defined in class defination, then I can add/remove items using this object.<br />
<br />
Now if I award points to CEHJ, it's ok with all? No problem?<br />
<br />
Thanks once again to all, specially CEHJ
</div>


<div>
I actually originally suggested exlicitly using a DLM :)<br />
<br />
<br />

</div>


<div>
&gt;&gt;this type of changes on Object creation is not allowed in NetBeans<br />
<br />
That's correct - adjust it with your editor
</div>


<div>
Yes, you are right, Object, thank you so much, thank you so much CEHJ also. :-)
</div>


<div>
&gt;&gt;No problem?<br />
<br />
Only that the accepted answer is incorrect ... ;-)
</div>


<div>
(It should be reopened - as it will mislead future NetBeans users with similar problems)
</div>


<div>
I did what objects said using notepad and it works, what's wrong?
</div>


<div>
I thought you were using Netbeans ...
</div>


<div>
What Object said was correct, then what you said in other comment (accept as assisted answer):<br />
&quot;Use your visual editor to set the correct model at design time&quot;<br />
<br />
Both together solved entire problem... so relax :-)
</div>


<div>
Do i take it that you've opened your source in Notepad to edit it?
</div>


<div>
If needed I can use notepad... Netbeans makes me angry in last 3-4 days... I think I should uninstall it!!!
</div>


<div>
&gt;&gt;If needed I can use notepad... Netbeans makes me angry in last 3-4 days... I think I should uninstall it!!!<br />
<br />
you need not uninstall it, it has both the visual editor and text editor! and the text editor in NB has much more advantageous than notepad! Get used it, then you'll realize the power of using an source editor!
</div>


<div>
Where is text editor of NB? If I'm going to use just text editor of NB, why I should install 160 MB NetBeans?<br />
<br />
I can install Programmer's Notepad which is ~1MB and have visual editing features.
</div>


<div>
&gt;&gt;If needed I can use notepad... Netbeans makes me angry in last 3-4 days...<br />
<br />
I'll take that as a yes CSecurity ;-) Do NOT mix the two. NetBeans disallows the editing of your JList code for a very good reason - you can corrupt your form files by doing that, and that might mean you can kiss goodbye to ever editing your GUI in the visual editor again. Since that's one of the best visual editors there is, although i'm not over-keen on the layout manager it uses by default, i would second k's comment to stick with it, unless you're moving away from GUI-related stuff
</div>


<div>
&gt; Where is text editor of NB? If I'm going to use just text editor of NB, why I should install 160 MB NetBeans?<br />
<br />
you shouldn't :)<br />

</div>


<div>
You are right, in one hand, I need it's GUI editor, in other hand I want to be able to modify my code...<br />
<br />
I think NetBeans should add a feature/option which users can disable this lock... I want to remove this lock and each time I change something in initializecomponent() part and when I create a button in GUI, it removes my change in initializecomponent()... It's not good! <br />
<br />
I think NetBeans should have a feature/option to let users decide about this lock!
</div>


<div>
You need to get used to how to work with NB, or it will seem it's working *against* you
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<div>
<div class="content wysiwyg-content">
I have a JList (I'm using NetBeans IDE)<br />
<br />
I tried getting DefaultListModel with jList1.GetModel()<br />
<br />
But casting doesn't work and I get casting exception.<br />
<br />
I tried to add a new string to jList with all possible methods, but all clears the list and adds new one!<br />
<br />
I want to keep what jList have and just add new entry to jList, also I want to know how I can get text in xth element of jList... I don't know anything about it at all..<br />
<br />
Please explain why I can't cast getModel() of jList to DefaultListModel<br />
<br />
Anyway, please advice how to add a new item to jList and enumerate all texts in list.<br />
<br />
Thanks from now!
</div>
</div>


I have a JList (I'm using NetBeans IDE)

I tried getting DefaultListModel with jList1.GetModel()

But casting doesn't work and I get casting exception.

I tried to add a new string to jList with all possible methods, but all clears the list and adds new one!

I want to keep what jList have and just add new entry to jList, also I want to know how I can get text in xth element of jList... I don't know anything about it at all..

Please explain why I can't cast getModel() of jList to DefaultListModel

Anyway, please advice how to add a new item to jList and enumerate all texts in list.

Thanks from now!

Append String (new Item) to JList

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.