How to see which process is running on a specific port

netstat -lnp | grep :80
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 ::ffff:127.0.0.1:8005       :::*                        LISTEN      29693/java         
tcp        0      0 :::8009                     :::*                        LISTEN      29693/java         
tcp        0      0 :::8080                     :::*                        LISTEN      29693/java