View source for DOM Tutorial Monopoly Questions (Easy)

{{DOM Tutorials}}
These question concern the monopoly documents.
Your code is tested against three different documents http://progzoo.net/monopoly1.xml
http://progzoo.net/monopoly2.xml and http://progzoo.net/monopoly3.xml

 &lt;!DOCTYPE game SYSTEM "monopoly.dtd">
 &lt;game>
  &lt;board>
   &lt;square label='GO'>
    &lt;player id='dog'  cash='1500'/>
    &lt;player id='ship' cash='1500'/>
    &lt;player id='iron' cash='1500'/>
   &lt;/square>
   &lt;square label='Old Kent Road' ref='old-kent-road'/>
   &lt;square label='Community Chest'/>
   &lt;square label='Whitechapel' ref='whitechapel'/>
   &lt;square label='Income Tax (Pay 200)'/>
   &lt;square label="King's Cross Station" ref='kings-cross'/>
  &lt;/board>
  &lt;bank>
   &lt;property id='old-kent-road' price='60'  colour='brown'/>
   &lt;property id='whitechapel'   price='60'  colour='brown'/>
   &lt;station  id='kings-cross'   price='200'/>
  &lt;/bank>
 &lt;/game>

==Number of child elements==
<question className="D" title="Easy 1" copyFile="monopoly1.xml monopoly2.xml monopoly3.xml monopoly.dtd">
<shell import='shells_monopoly.xml#triple'/>
<p class='imper'>Show the number of child elements.</p>
<prog>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement());
}

</prog>
<answer>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement()
                      .getChildNodes()
                      .getLength());
} 
</answer>
</question>

==Number of player elements==
<question className="D" title="How many players"  copyFile="monopoly1.xml monopoly2.xml monopoly3.xml monopoly.dtd">
<shell import='shells_monopoly.xml#triple'/>
<p class='imper'>Print the number of player elements.</p>

<prog>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement());
}


</prog>
<answer>static void doIt(Document d)
{
  System.out.println(d.getElementsByTagName("player")
                      .getLength());
}
</answer>
</question>

==Square 3==
<question className="D" title="How many players"  copyFile="monopoly1.xml monopoly2.xml monopoly3.xml monopoly.dtd">
<shell import='shells_monopoly.xml#triple'/>
<p class='imper'>Show the label of square element number 3.</p>

<prog>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement());
}


</prog>
<answer>static void doIt(Document d)
{
  System.out.println(
     ((Element)d.getElementsByTagName("square")
                .item(3))
                 .getAttribute("label"));
}
</answer>
</question>

==Parent of player 1==
<question className="D" title="How many players"  copyFile="monopoly1.xml monopoly2.xml monopoly3.xml monopoly.dtd">
<shell import='shells_monopoly.xml#triple'/>
<p class='imper'>Show the label of the parent of player number 1.</p>

<prog>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement());
}


</prog>
<answer>static void doIt(Document d)
{
  System.out.println(
     ((Element)d.getElementsByTagName("player")
                .item(1)
                .getParentNode())
                 .getAttribute("label"));
}
</answer>
</question>

==id of property 0==
<question className="D" title="How many players"  copyFile="monopoly1.xml monopoly2.xml monopoly3.xml monopoly.dtd">
<shell import='shells_monopoly.xml#triple'/>
<p class='imper'>Show the id of property number 0.</p>

<prog>static void doIt(Document d)
{
  System.out.println(d.getDocumentElement());
}


</prog>
<answer>static void doIt(Document d)
{
  System.out.println(
     ((Element)d.getElementsByTagName("property")
                .item(0))
                 .getAttribute("id"));
}
</answer>
</question>