I've never disabled Flash before. I keep it up to date. It has had security issues in the past, but I update it regularly and have a lot of security on my computer. But those security issues it has had in the past are probably the big reason it's going away. That and people are annoyed with Flash ads. Though there are annoying JavaScript ads to. Also, Flash was banned on Apple products so that helped mean its doom.

As for Java, I probably haven't had that on my computer in a decade. If I found someone with it on their computer I would have ask why they have it. Do they really, really need to have it? Many years ago (2013) the U.S. government actually said you should stop using it because of the seucrity issues:
https://www.reuters.com/article/us-java-security/u-s-warns-on-java-software-as-security-concerns-escalate-idUSBRE90A0S320130111

Java has probably fixed some of those issues and there probably isn't that kind of warning right now, but I would still never install it on a computer I use for anything else.

Which does bring me to something else I should mention while on the topic of security. Windows 7 should no longer be used after January 14th, 2020:

https://support.microsoft.com/en-us/help/4057281/windows-7-support-will-end-on-january-14-2020

You should never use an operating system after they stop issuing updates. That's asking for trouble. My dad is using an older computer that was too old to update to Windows 10 when that was free. We're buying a new desktop computer at Office Depot during their Black Friday sale to replace the computer running Windows 7. At that point, I might take off everything personal from the Windows 7 computer, or even reinstall it, and only use that computer for Java if needed. (using that computer for absolutely nothing else online) The NOAA hurricane hunters have radar data from the P-3 in a format that can be read by some software that uses Java. I haven't been able to look into that because I would never install Java on my computer, even briefly. I think they also have something in the PHP coding language but I haven't had time to look into that.

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Eventually I'll options to my radar map showing worldwide radar sites, like showing certain countries and options to hide certain radars perhaps, like TDWR sites in the U.S. perhaps. I rotate the projects I am currently working on and getting the radars on the map is more important, then organization later, such as exporting to Google Earth and having the data in table format. I'll be back to model system rewrites soon after I do a few countries and then come back and do more countries later. Finding the exact radar sites in a country can be tricky. Some radars are are a few feet wide and a few feet tall, located on top of a building for example. For at least one in Italy I had found pictures and/or video and matched the terrain in Google Street View imagery and/or historical satellite imagery to find where it was. One small radar was on an actual castle. (https://valeggio.com/wp-content/uploads/2018/04/castello-scaligero-valeggio-proloco-lanfredi5.jpg)

My research for Italy below for example, not including many dozens of links since some radar sites have data on various websites. And I find this easier to do than some of the code that drives me nuts at times.