I ran a project on Intellij , and then I closed my Intellij by choosing [disconnect] when I closed my Intellij. When I opened the program again to run my project, Intellij reminded me that port 8080 was occupied. I knew I could finish the project by killing port 8080. I wondered if there was any way that Intellij could end it directly.
I'm sorry that my English is not so good. It's translated online.
You can't terminate disconnected program from IDEA. You need to find it by port and then terminate it manually.
In Linux you may use something like this:
$ ss -tulpn | grep 8080
tcp LISTEN 0 100 *:8080 *:* users:(("java",pid=1290385,fd=287))
$ kill -2 1290385
ss command finds listening ports, grep finds port 8080, pid is number of your process and then you terminate the process with kill.