Very few websites use Java these days. It was just too vulnerable to malware so we are recommending that it be removed. Of course the malware writers know that so they have switched to Flash
Foistware are progams that you get foisted on you that you don't need or want. When you download the latest adobe Reader they will "offer" you some additional software. You have to uncheck the box in front of the extra software or you will get stuck with it. They are pretty sneaky about it too. It is always the last thing to show up on the download page so if you are in a hurry and hit download without unchecking the boxes because they haven't appeared yet you will get it foisted on you. Same when you download Java.