Difference between revisions of "DOM Tutorial 2"
(→Navigating Back and Forth) |
(→firstChild and lastChild) |
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| Line 90: | Line 90: | ||
public class D | public class D | ||
{ | { | ||
| − | public static void main(String[] args) { | + | public static void main(String[] args) |
| − | + | { | |
| − | + | try | |
| + | { | ||
DocumentBuilderFactory dbf = | DocumentBuilderFactory dbf = | ||
DocumentBuilderFactory.newInstance(); | DocumentBuilderFactory.newInstance(); | ||
| Line 101: | Line 102: | ||
Element f = (Element)e.getChildNodes().item(1); | Element f = (Element)e.getChildNodes().item(1); | ||
System.out.println(f.getAttribute("legend")); | System.out.println(f.getAttribute("legend")); | ||
| − | } catch (Exception ex) { | + | } |
| + | catch (Exception ex) | ||
| + | { | ||
System.out.println(ex); | System.out.println(ex); | ||
} | } | ||
| Line 113: | Line 116: | ||
public class D | public class D | ||
{ | { | ||
| − | public static void main(String[] args) { | + | public static void main(String[] args) |
| − | + | { | |
| − | + | try | |
| + | { | ||
DocumentBuilderFactory dbf = | DocumentBuilderFactory dbf = | ||
DocumentBuilderFactory.newInstance(); | DocumentBuilderFactory.newInstance(); | ||
| Line 126: | Line 130: | ||
System.out.println(f.getAttribute("legend")); | System.out.println(f.getAttribute("legend")); | ||
System.out.println(l.getAttribute("legend")); | System.out.println(l.getAttribute("legend")); | ||
| − | } catch (Exception ex) { | + | } |
| + | catch (Exception ex) | ||
| + | { | ||
System.out.println(ex); | System.out.println(ex); | ||
} | } | ||
Latest revision as of 20:51, 12 September 2012
You can navigate around your DOM document using methods such as:
getParentNode() getChildNodes() getFirstChild() getLastChild() getNextSibling() getPreviousSibling()
Some of these are methods of Node some and methods of Element. Most return a Node however one returns an Element and one returns a NodeList. Can you figure out which? If not then look it up at http://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/java-language-binding.html
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE stock [
<!ELEMENT stock (item*)>
<!ELEMENT item EMPTY>
<!ATTLIST item id ID #REQUIRED
legend CDATA #REQUIRED
price CDATA #REQUIRED>
]>
<stock>
<item id="E1" price="50" legend="Pr-Burger" />
<item id="E5" price="15" legend="Crisp S+V" />
<item id="E6" price="15" legend="Crisp C+O" />
<item id="E7" price="50" legend="Flat Cola" />
</stock>
Print the legend of the element before "E6".
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firstChild and lastChild
Print the legend of first child of the document element also the last child
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