Question

In java xml file I am trying to add a element to connection node using appendchild. I wanted the existing server node to get replaced with the new value but it is not happening .

I see in the documentation for this function that the existing node will be removed.

win2k8

Answer 1

The javadoc says:

Adds the node newChild to the end of the list of children of this node. If the newChild is already in the tree, it is first removed.

That does not mean, that the tag with the same name will be replaced. It means, the Node object will be first removed if it already is inside the parent, and it’s about passing a reference to a Node that is already added to the parent, not about XML tags.

If you want to replace the existing XML element with your own, I suggest first finding (by iterating over the NodeList returned form getChildNodes()) and removing unwanted elements with removeChild(node).