This week's book giveaway is in the Java in General forum. We're giving away four copies of Beginning Java 17 Fundamentals: Object-Oriented Programming in Java 17 and have ishori Sharan & Adam L Davis on-line! See this thread for details.
Yes, that was the problem, thank you! I saw it two days ago, but I still have problems to connect pages. However I missed web.xml file again, because I need to register rich libraries. I'm trying to solve this, but if I don't do it, I will write here. I hope that you will be here again!