IllegalComment.xml

<?xml version="1.0" encoding="utf8" standalone="no"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">

<!-- The dtd allows zero or one comment element -->

<properties>
<comment>comment1</comment>
<comment>comment2</comment>
<entry key="firstKey">value of the first key</entry>
</properties>