Compare only the tags between two XML using JAVA

First XML

<name>
 <firstName>someValue</firstName>
 <lastName/>
</name>
<location/>

Second XML

<name>
 <firstName/>
 <lastName/>
</name>
<name>
 <firstName/>
 <lastName/>
</name>
<location>someOtherValue</location>

Third XML

<name>
 <firstName>someValue</firstName>
 <lastName/>
</name>

Fourth XML

 <name>
  <firstName>someValue</firstName>
  <middleName/>
  <lastName/>
 </name>
 <location/>

compare(First XML, Second XML) = similar (It contains the same node elements only it is repeated and value is not taken into account)

compare(First XML, Third XML) = not similar (location tag is missing)

compare(First XML, Fourth XML) = not similar (lastName tag is newly added)

Could anybody help me in comparing the XML in the above said manner?