Getting messages, "We've moved c.class to Quarantine it was infected with Java:Malware gen [Trj 7]

Frank,
I am sorry to hear about this. Please click on view more details option in AVG threat detection popup and provide the screenshot to assist further.
To create a screenshot, please follow this article .

AVG moves this to quarantine but it keeps being received, endlessly, after each deletion, singly or in quantity. What do I do? The AVG message keeps popping up and obscuring my screen.

Frank,
I am sorry to hear about this. Please click on view more details option in AVG threat detection popup and provide the screenshot to assist further.
To create a screenshot, please follow this article .

Frank, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru