Listing E: insertBefore example

Node ndProduct = XPathAPI.selectSingleNode(doc,"/catalog/products[@sku='123']");

Node ndNewColor = doc.createElement("color");

ndNewColor.appendChild(doc.createTextNode("red"));

Node ndSize = XPathAPI.selectSingleNode(doc,"/catalog/products[@sku='123']/size]");

ndProduct.insertBefore(ndSize, ndNewColor);