This week's book giveaway is in the Java in General forum. We're giving away four copies of Helidon Revealed: A Practical Guide to Oracle’s Microservices Framework and have Michael Redlich on-line! See this thread for details.
For examples on struts you can refer here. I will suggest you download one example and try executing. In that way you can easily find the problem. All the required jar files can be downloaded with the example. The only thing you need to do is copy and paste the example inside the webapps folder of tomcat.