I want to get LRLightroom for Windows, but I see that Java is required. The advise that I get from people who know about security risks is that I should remove Java from my browsers (which I have don) because of security risks.

Is Java really necessary for the program? Is there a way to use the program without Java?

Hi, LRTimelapse does not use the Java Plugin for the Web-Browser that might be subject to security considerations.
LRTimelapse runs as a native Java Program, without Web-Browser. You don't have to be worried.