?
Solved

JTree question

Posted on 2001-08-26
3
Medium Priority
?
707 Views
Last Modified: 2008-02-26
I have JTree which a fill with nodes at the first time.
After that a call removeAllChildren() method for some node and I am adding a brand new set of nodes as childrens for this node. Why the JTree doesn't changes? (There are only interrupted lines to previous childs which are still visible)!
0
Comment
Question by:msterjev
  • 2
3 Comments
 
LVL 92

Expert Comment

by:objects
ID: 6427145
Sounds like your making calls on the tree node (as opposed to the model).
The tree node do not support firing TreeModelEvent's.
If you change your nodes you must also ensure that the matching events are fired by your tree model.
0
 
LVL 3

Author Comment

by:msterjev
ID: 6427539
The events are minor problem. Give me example how to dinamically change structure of one node( remove all its childrens and add new ones)!
0
 
LVL 92

Accepted Solution

by:
objects earned 80 total points
ID: 6427563
> The events are minor problem

No, events are the problem.
The Jtree updates itself according to events recieved from its tree model.

> Give me example how to ...

If you're using a DefaultTreeModel then just call treemodel.reload(node) after you've finished modifying the nodes children.



0

Featured Post

[Webinar] Cloud and Mobile-First Strategy

Maybe you’ve fully adopted the cloud since the beginning. Or maybe you started with on-prem resources but are pursuing a “cloud and mobile first” strategy. Getting to that end state has its challenges. Discover how to build out a 100% cloud and mobile IT strategy in this webinar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses
Course of the Month15 days, 12 hours left to enroll

850 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question