Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

JTree question

Posted on 2001-08-26
3
Medium Priority
?
706 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

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

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
Suggested Courses

636 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