Hi all, I am not very clear how the child nodes are handled in JTree. I have a JTree and i obtain the tree model using JTree.getModel() method. TreeModel in turns get me the root node of the Tree using TreeModel.getRoot() method. I do a getChildCount to obtain number of child nodes. If i want to delete all child nodes, i am not able to use a for loop to do that because everytime i use TreeModel.getChild(rootNode, index) and removeNodeFromParent() to get and remove a child from root node, the array of child nodes shrinks automatically, like you are pulling a book at the bottom of a pile of books. So if i want to delete all child nodes, i have to getChild at index=0 for as many times as the child count. Is this the typical way to delete all child nodes?
Hi there is of course another way to remove all children. You can cast the root node to a DefaultMutableTreeNode. with this you can do it. TreeModel model = tree.getModel(); DefaultMutableTreeNode root = (DefaultMutableTreeNode) model.getRoot(); root.removeAllChildren(); Bye Rene