mac port 80 in use code example

Example 1: how to port number of 8080 in macos

$ lsof -i :8080 | grep LISTEN

java    42975 mkyong   57u  IPv6 0xf10ca37d995a077f      0t0  TCP *:http-alt (LISTEN)

Example 2: mac find who is using port 8080

$ lsof -i :8080 | grep LISTEN
or
$ ps -ef 42975