merging two tables from two diffrent htmls files using java

Hi

I am trying trying to merge two tables of same table name,same column heading but different data inside using java.The tables are generated using HTML code in two different HTML files.

any idea how can i go ahead?

How is this data stored in Java?

Maps?

// Json

Actually Ii have two xml like files called dita files.In these files the structure of the tables are defined like this...

<rule class="+ topic/li dr-d/rule ">
<ruleName class="+ topic/ph dr-d/ruleName ">4x41b</ruleName>
<ruleNotes class="+ topic/ph dr-d/ruleNotes ">-</ruleNotes>
<ruleDesc class="+ topic/itemgroup dr-d/ruleDesc ">Ex maximum </ruleDesc>
<ruleOper class="+ topic/ph dr-d/ruleOper ">?</ruleOper>
<ruleValue class="+ topic/ph dr-d/ruleValue ">80</ruleValue>
</rule>

now I need to merge the contents of 2 tables in xml files after checking ruleName in both the tables are same and store the output in third file