if you open that link above and see, you must first choose a 'formation' then when hovering with a mouse over a position that comes up after choosing your formation, you can start to type in a name of a player which then brings a list up with players containing what you typed, in their name.. if you click the player you are looking for it will display the card of that player in the position you chose..

I know it's Java, I'm a really new beginner to it and I don't know what kind of tags would be involved, how it is made, anything!

All replies are greatly appreciated, thank you

you can also right click and go to 'view page source' if that helps you to understand and then help me