As you are probably using Wicket, it is not entirely impossible that you are using maven already. In that case, just add this to your pom.xml:
<dependency> <groupId>org.codesmell</groupId> <artifactId>org.codesmell.wicket.tagcloud</artifactId> <version>[0,)</version </dependency>
Be sure to configure your Maven or your corporate Repository or Repository-Proxy to use this URL:
If you want to use this without maven, just download the current jar here.