Somple question about xml structure

Question

xml file is :
<?xml version="1.0" encoding="UTF-8"?>
<properties>
     <category>
          <timeout>60</timeout>
          <timeout>100</timeout>
</category>
</properties>
and want to use DOM in java to get the nodelist information,
Element root=doc.getDocumentElement();
NodeList nodelist = root.getChildNodes();
for(int i = 0;i<nodelist.getLength();i++)
System.out.println(nodelist.tostring());
System.out.println(nodelist.getLength());
System.out.println(nodelist.getNodeType());
but the output is:
<properties>
     <category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
</properties>
3 //why here the nodelist.length is 3?which 3?
3
<properties>
     <category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
</properties>
3
1
<category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
5 //why is 5? which 5?
3
<category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
5
1
<timeout>60</timeout>
1 //here is just 1?
3
<category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
5
3
<category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
5
1
<timeout>100</timeout>
1
3
<category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
5
3
<properties>
     <category>
          <timeout>60</timeout>
          <timeout>100</timeout>
     </category>
</properties>
3
3
why all the node.getNodeType is 3, 3 means that they are all Text type?
thanks

Answer 1

some wrong.sorry
the code is :
Element root=doc.getDocumentElement();
NodeList nodelist = root.getChildNodes();
for(int i = 0;i<nodelist.getLength();i++)
System.out.println(nodelist.item(i).tostring());
System.out.println(nodelist.item(i).getLength());
System.out.println(nodelist.item(i).getNodeType());
}