Deleting Nodes from XML Tree (JTree)

Question

I have created a XML Tree(extended from JTree) using XNodes ( extended from DefaultMutableTreeNode)
After some insertions, i need to delete certain nodes from the XML Tree.. but after deletion, XNode will be null.
subroutine is as follows...
appreciates any advice
Thanx
private XNode RemoveExtraNode( XNode xNode ){
int child;
String nodeType;
XNode childNode=null;
if ( (child=xNode.getChildCount() ) > 0){
for(int i=0;i<child;i++){
childNode=(XNode)xNode.getChildAt(i);          
     nodeType = childNode.getType();
     if(nodeType.equals("DTD") )
     childNode.removeFromParent();
}//end for (int i=1;i<child;i++)
}//endif((child=xNode.getChildCount())!=0)
return xNode;     
}//RemoveExtraNode

Answer 1

Hi IKEDA
Thanx for the reply.
I have tried xNode.remove(childNode) b4 and it still return a null JTree.
Anyway fyi i discover i can delete last child of xNode and return the correct java tree. therefore to delete a node of my choice i simply insert its next sibling nodes in its place and delete that particular node when it becomes the last child.