Sort JTree

[Manishkumar Modi]

I have JTree which is generated dynamically, I want to sort it and display it.

[Maneesh Godbole]

What have you tried so far, and where are you stuck?

[Michael Dunn]

after searching google, which code did you have problems with.

[Manishkumar Modi]

I used following code
protected DefaultTreeModel m_model;
DefaultMutableTreeNode rootTree = new DefaultMutableTreeNode("My Root", true);
m_model = new DefaultTreeModel(rootTree);
tree = new JTree(m_model);

so what code should i write to sort my tree

[Maneesh Godbole]

From the code you have posted, your tree has only one element, viz. root. You want to sort 1 element???

[Manishkumar Modi]

i haven't complete my whole code here....
but its 2 level Tree

[Maneesh Godbole]

So how do you want the sorting to be? Level wise? All data?
You mentioned earlier,

I have JTree which is generated dynamically

Where is the data coming from? DB? If yes, have you considered ordering the data when you retrieve it through a query?

[Manishkumar Modi]

Data is coming from String which contains XML data

whole code is

public JTree getTree() {
		
		DefaultMutableTreeNode rootTree = new DefaultMutableTreeNode("IRIS XBRL Validator", true);
		
		try{
			DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
			DocumentBuilder db = dbf.newDocumentBuilder();
			InputSource inStream = new InputSource();
			System.out.println("Tree Generation : "  + Browse.errorString);
			inStream.setCharacterStream(new StringReader(Browse.errorString));
			Document doc = db.parse(inStream);
			//Document doc = db.parse("D:\\filename.xml");
			NodeList rootNode = doc.getElementsByTagName("ErrorDetail");			
			System.out.println(rootNode.getLength());
			NodeList specification = rootNode.item(0).getChildNodes();
			for(int x = 0;x < specification.getLength();x++){
				Node specificNode = specification.item(x);
				if(specificNode.getNodeType() == Node.ELEMENT_NODE){
					NodeList filename = specificNode.getChildNodes();
					System.out.println("file name: " + filename.item(0).getNodeName().equals("filename"));
					if(filename.item(0).getNodeName().equals("filename")){
					DefaultMutableTreeNode specification_error = new DefaultMutableTreeNode(specificNode.getNodeName());
					for(int y = 0; y < filename.getLength(); y++){
						Node filenameNode = filename.item(y);
						if(filenameNode.getNodeType() == Node.ELEMENT_NODE){
							Element elementFile = (Element) filenameNode;
						DefaultMutableTreeNode filename_error = new DefaultMutableTreeNode(elementFile.getAttribute("name"));
						specification_error.add(filename_error);
						NodeList error = filename.item(y).getChildNodes();
						for(int z = 0; z < error.getLength(); z++){
							Node errorNode = error.item(z);
							if(errorNode.getNodeType() == Node.ELEMENT_NODE){
								Element element = (Element) errorNode;
								System.out.println(element.getAttribute("code"));
								if(element.getAttribute("Type").equalsIgnoreCase("Error")){
									String str = element.getAttribute("code");
									//if(str.contains("_"))
									filename_error.add(new DefaultMutableTreeNode(new IconData(ICON_MSG_ERROR, str)));
									//else specification_error.add(new DefaultMutableTreeNode(new IconData(ICON_MSG_ERROR, str)));
								}else{
									String str = element.getAttribute("code");
									//if(str.contains("_"))
									filename_error.add(new DefaultMutableTreeNode(new IconData(ICON_MSG_WARNING, str)));
									//else specification_error.add(new DefaultMutableTreeNode(new IconData(ICON_MSG_WARNING, str)));
								}
							}
						}}
					}
					rootTree.add(specification_error);
				}
					
				}
			}
		}catch(Exception e1){
			e1.printStackTrace();
		}
		
		m_model = new DefaultTreeModel(rootTree);
		tree = new JTree(m_model);
		
		//Create a tree that allows one selection at a time.
		tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
		tree.addTreeSelectionListener((TreeSelectionListener) this);
		m_renderer = new IconCellRenderer();
		tree.setCellRenderer(m_renderer); 
		m_editor = new IconCellEditor(tree);
		tree.setCellEditor(m_editor);
        tree.setBackground(LookAndFeel.getBGColor());
        //To specify that the Java look and feel should draw no lines, use this code
        tree.putClientProperty("JTree.lineStyle", "Angled");
        tree.setRootVisible(true);
		return tree;
	}

[Maneesh Godbole]

In future, while posting code, please UseCodeTags. I have added them this time. As you can see it makes the code much more easier to read and understand.

Maneesh Godbole wrote:So how do you want the sorting to be? Level wise? All data?

You want to tell us about this?

[Manishkumar Modi]

level wise

[Maneesh Godbole]

In pseudo code
Access the tree model.
Retrieve all nodes for the specified level.
Use something like Collections#sort()

[Manishkumar Modi]

Thank u. i will use collection