Java Utililty Methods XML Node Next

while (node != null) {
    if (Node.ELEMENT_NODE == node.getNodeType())
        return (Element) node;
    node = node.getNextSibling();
return null;

Node next = node.getNextSibling();
while (!(next instanceof Element) && next != null) {
    next = next.getNextSibling();
if (next instanceof Text) {
    return null;
return next;
...

if (current == null) {
    System.out.println("NODE IS NULL");
    return null;
boolean found = false;
boolean childVisited = false;
while (found != true) {
    if (current.hasChildNodes() && childVisited == false) {
...

return getNextSiblingByName(currentNode, tagName);

node = node.getNextSibling();
while (node != null && node.getNodeType() != nodeType) {
    node = node.getNextSibling();
return node;

node = node.getNextSibling();
while (node != null && node.getNodeType() != nodeType) {
    node = node.getNextSibling();
return node;

node = node.getNextSibling();
while (node != null && node.getNodeType() != nodeType) {
    node = node.getNextSibling();
return node;