/** Make the given child the new parent. */ public void enterChild(int index) { currentChild = currentParent.getChild(); while ((currentChild != null) && (index != 0)) { index--; currentChild = currentChild.getSibling(); } if (currentChild != null) { currentParent = currentChild; currentChild = currentParent.getChild(); } }
public void next() { currentChild = currentChild.getSibling(); }