Most of the usage on our campus is for commercial use. If you need Java, please refer to the notice from UTokyo-CERT on the page [1] below.
[1] 2019/05/13 Important changes in Oracle JDK (Java) License (Only in Japanese)
If you do not need Java, please refer to the following [2], [3] pages and uninstall it.
If you are unsure whether Java is installed on your computer, please use the tool on the page [4] below.
[2] How do I uninstall Java on my Windows computer?
[3] How do I uninstall Java on my Mac?