File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Swing / AWT / SWT and the fly likes Jtree with its Modules Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Swing / AWT / SWT
Bookmark "Jtree with its Modules" Watch "Jtree with its Modules" New topic
Author

Jtree with its Modules

seema chhetri
Ranch Hand

Joined: Feb 17, 2009
Posts: 41
Hello ,

I have made one Jtree in which its have 26 modules around when i click on any of them again all 26 modules is coming from that node please see my code and let me know what to do.


Thanks
seema
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19653
    
  18

I couldn't compile your code because of several missing classes, but your TreeModel code looks really bogus. There are always 2 children (getChildCount), but if the JTree tries to get these it always gets a completely new object. If it then try to get the index of an object, 0 is always returned. And nothing is a leaf, ever.

The following are usual implementations:
- each object has an associated List (or array); let's call it children
- getChildCount(o) returns children.size() (children.length for the array)
- isLeaf(o) returns children.isEmpty() (children.length == 0 for the array)
- getIndexOfChild(o, child) returns children.indexOf(child) (a loop to retrieve the index for the array)
- getChild(o, index) returns children.get(index) (children[index] for the array)

Usually this List (or array) is stored as part of the object (e.g. DefaultMutableTreeNode) or can be constructed using the object.

For instance, a naive (very slow) File tree model (missing a few methods):


SCJP 1.4 - SCJP 6 - SCWCD 5 - OCEEJBD 6
How To Ask Questions How To Answer Questions
seema chhetri
Ranch Hand

Joined: Feb 17, 2009
Posts: 41
Hello,


thanks for repplying .but the main problem is that i dont want any leaf. I only want root then after this modules no child of these modules.

please tell me what can be possible for this code.


Thanks
 
Consider Paul's rocket mass heater.
 
subject: Jtree with its Modules
 
Similar Threads
JTree
JTree
JTree
JTree
JTree