Get All Nodes in a tree

Can somebody tell me how to get all the node objects (DefaultMutableTreeNode) that are there in JTree?
Suppose I have created a tree and added 4 nodes to the same, and if I want to get dynamically all the nodes that are there in the tree, what should I do?
Please help me..as it is urgent
Thanx in Advance
Novi

If you check the documentation to DefaultMutableTreeNode you see that some methods return enumerations, for example postorderEnumeration. You can use these to traverse the tree,
DefaultMutableTreeNode root = ....;         // start node.
Enumeration e = root.postorderEnumeration(); // get wanted enumeration
while (e.hasMoreElements()) {                // all nodes
   DefaultMutableTreeNode node =
      (DefaultMutableTreeNode)e.nextElement(); // get node
   // do something with the node
}PS. The code compiles but I havent actually run it :(

Similar Messages

JTree - How to Expand all Nodes in the Tree

I have a tree that has one primary node, two sub-nodes, and multiple sub-sub-nodes under those. I want to expand (show) all these nodes in the tree when the tree first loads. I tried expandRow() but that only seems to expand one row at a time by entering a single integer for the row. Is there any way to expand all rows/nodes when loading the tree?

see
http://forum.java.sun.com/thread.jsp?forum=57&thread=148793

XSD get all node and all leaf of all node URGENT please!

I am want write a java program that will parse an xml schema and obtain all nodes and all leaf of all nodes
samebody can help me?

i use this, but i can only can print this:
/quotazione
/quotazione/ORG_ID
/quotazione/CUSTOMER_ID
/quotazione/quot
/quotazione/customer
but the schema is:
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb"
xdb:storeVarrayAsTable="true">
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     </xs:complexType>
</xs:schema>
the java class is:
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          // TODO Auto-generated method stub
          XMLSchema schemadoc=null;;
          XSDBuilder builder;
          URL url;
          int i=0;
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By default all nodes expanded in tree table in jsff page in adf

Hi All,
I have a jsff page there is a table tree on it.I want it to be expanded on page load(or default behavior).
How will I achieve it.
This is to be noted that this jsff page so I can not use before phase or after phase.
There is a property in tree table which is expandAllEnabled it does not expand nodes of tree.
There is one more property in tree table which is Initially expanded it shows only first node of tree table expanded.
Thanks & regards,
Vikas
Edited by: vikasadf on May 16, 2013 8:02 AM

Hi,
It means store the variable ps in pageflowscope variable calles expanedAllNodes and use the disclosed property of treetable.
example:
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Thanks
Raj Gopal K

Tree table-initially expand all nodes raises error when closing a node 11g

Hello,
Frank Nimphius posted a blog entry about how to initially display all the nodes in a tree or table here:
[http://thepeninsulasedge.com/frank_nimphius/2007/12/19/adf-faces-rc-initially-expanding-all-nodes-in-a-tree-or-tree-table/|http://thepeninsulasedge.com/frank_nimphius/2007/12/19/adf-faces-rc-initially-expanding-all-nodes-in-a-tree-or-tree-table/]
This works very well. However, when the user tries to close a node, a NullPointerException is thrown.
Below is the stacktrace.
Does anyone know how to work around that issue?
java.lang.NullPointerException
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OK I have tried Frank's suggestion about the 2 entries in the managed bean and it works but I cannot collapse my child node !
I have a Master-Detail-Detail setup.
In the Grandparent I have this :
RowKeySet rks = new RowKeySet(true);
table1.setDisclosureState(rks);
this.grandParentTable = table1;
and in my Parent table I have this :
RowKeySet rks = new RowKeySet(true);
table2.setDisclosureState(rks);
this.parentTable = table2;
ie the same.
In my child I have nothing just the default accessors.
The collapse works OK for the Grandparent but when I click Hide for the Parent it does not do anything - no error message either.
cheers

Expanding and Collapsing All Nodes in a TreeByNestingTableColumn

Hi Experts,
I'm using NWDS 7.0.18.
I have a table with TreeByNestingTableColumn (master column).
The child nodes are recursive nodes and are loaded at runtime with an action onLoadChildren when clicking the master column. My question is, when the hierarchy is in its initial state, only the root node is loaded into the table. But I want to add functionality for expanding all nodes in the tree. Is there a way to achieve this, I'm a little confused because the Hierarchy children havent been loaded yet.
Any suggestion will greatly help.
Regards,
Kunal.

Hi Kunal,
I got your problem.
To expand & collpase all the child nodes please modify the code as below.
Create two methods exapndAll & collapseAll and call these two methods in existing button actions.
as below.
public void expandAll( com.sap.tut.wd.treetable.wdp.IPrivateTreeTableView.ICatalogEntriesNode node )
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public void collapseAll( com.sap.tut.wd.treetable.wdp.IPrivateTreeTableView.ICatalogEntriesNode node )
    //@@begin collapseAll()
     for (int i = 0; i < node.size(); i++) {
     node.getCatalogEntriesElementAt(i).setExpanded(false);
     if(node.getCatalogEntriesElementAt(i).getIsLeaf()==false)
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public void onActionCollapseAll(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionCollapseAll(ServerEvent)
    collapseAll(wdContext.nodeCatalogEntries());
    //@@end
public void onActionExpandAll(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionExpandAll(ServerEvent)
    expandAll(wdContext.nodeCatalogEntries());
    //@@end
We are invoking the methods recursively to expand/collapse all the child nodes.
This works.
Regards,
Charan

How to get all tree node parents upon select

I have a tree, and when user clicks an item in the tree, I want to get all the parents of the selectedItem node.
So if I have this XML:
<products>
    <item>
        <sku>1001</sku>
        <quantity value="100" />
    </item>
    <item>
        <sku>2001</sku>
        <quantity value="250" />
    </item>
    <item>
        <sku>3001</sku>
        <quantity value="300" />
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</products>
If user clicks on the 1001 sku, I want to get something like this:
<products><item><sku>
Also if I have a custom component, perhaps based on tree or but maybe not, and if this custom component shows the actual XML and used can click on XML elements or XML attributes, how can I use the selected item to get the parent nodes, so if they click on the value="100", I want to get this:
<products><item><sku><quantity>
I need this because I have a set of fields, and users will drag their XML node elements or attributes to my fields, to define a mapping between their XML and my fields.
The selectedItem is just a snippet of XML cut off from its source XMLListCollection, and I might be able to search the XMLListCollection, but what if there were say <sku> elements at more than one level in the XML? I'm guessing a search might return multiple hits for a selected element, when I want the actual parent nodes for the actual selected node.
Thanks very much!

var path:Array=[]
var parent:XML = xxxx.selectedItem.parent()
while(parent){
path.push(parent.localName())
parent = parent.parent()
Or, i didn't get your question and xxxx.selectedItem is "detached" XML snippet ?

How to get the root node of a tree?

I wanna get all the leaf node of a tree.But JTree have no method about how to get the root TreeNode of a tree.Then how should I do?

try this:
http://javaalmanac.com/egs/javax.swing.tree/GetNodes.html?l=rel

ADF Tree Component Iterating through all nodes upon ONE node click...

Hi to all !. My name is Agustin and I live far away... In Cordoba Argentina to be specific !. My doubt would be the following one: I wanted the other day to build a af:tree component and put in the NodeStamp an commandLink with a setActionListener... So as to get the selected Node... In this case, I have category of books... Let say DataBase, Cloud Computing, Web Development and so on... But the misterious thing happens when I click on one node, and the action method in my backing bean is executed one time per each node the Tree has... I notices this coz I made a System.out.println()... My idea would be to detect the user click event so as to update a Table... My code is as follows !...
<af:tree value="#{backManager.listaCategoria}" var="cat"
binding="#{backManager.tree1}" id="tree1">
<f:facet name="nodeStamp">
<h:commandLink binding="#{backManager.outputText1}" action="#{backManager.outputText1_action}" >
<af:setActionListener from="#{cat}" to="#{backManager.selectedItem}" />
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</af:tree>
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the selectedItem is an attribute of the type SelectItem !.
Where I would be making the mistake ?... Or should I implement the thing in a different way ?... Thankx ! :D

Hi,
its strange when you say it executes the action per each node in the tree. One thing tough I would change is to go from h:commandLink to af:commandLink as it allows you to set partialSubmit=true in which case a click on the tree doesn't refresh the whole tree. I then would add an f:attribute tag to the command link
<f:attribute name="cat" value="#{cat.id}"/>
On the command link I had the actionListener property pointing to a managed bean with a method like
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Another option would be to use the SelectListener of the tree and don't use a command link at all. You respond to tree node selection similar to here
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/83-bidi-synchronization-tree-form-401841.pdf
Frank

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Hi,
I Have Constructed a Tree and i am Able to get the Details of the clicked Node on the Tree into the Backing Bean.
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Ex:On Click of Employee(Child Node) in the Tree, I should get the Department (Parent Node) in Backing Bean.
I'm able to get only the details in the same Level of Tree Node(ie All Employees in the Selected Employee Level).
IDE: JDeveloper 10.1.3.2.
Please Suggest me.
Thanking You,
Bandaru.

Sounds like you are looking for something like this
Connected to Oracle Database 11g Enterprise Edition Release 11.1.0.6.0
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Hello,
I have 2 questions regarding a tree control:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
Any ideas?
Attachments:
Tree example.vi ‏6 KB

Mentos wrote:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
Did you try a search? There's no direct way of doing this. You have to navigate the tree and build up an array. You can find an example here: http://forums.ni.com/t5/LabVIEW/get-all-children-of-a-parent-in-tree/td-p/729548
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
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How to get each node in tree?

how to get each node in tree?
Message was edited by:
NikisinProblem

how to get each node in tree?
Since (as far as I know) treeNode is an interface, the real question to me is how are you implementing your treeNodes? Are you overriding the toString() method?

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I have a JTree. If a node is selected, before the user select another, I need to make a question if he have sure about the new selection.
If the user answers not, I need to select the previous node.
I have in my class a variable, type of DefaultMutableTreeNode, that makes reference to the last node selected.
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Thanks for any help.
Renato de Melo

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Hi,
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http://www.developerfusion.co.uk/show/2064/

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