8080 port already taken issue when trying to redeploy project from Spring Tool Suite IDE

Question

I have strange thing when I try to modify Spring project inside my Spring Tool Suite. On the first load (deploy) everything is fine, application compiles and runs on localho

Answer 1

For Mac users(OS X El Capitan):

You need to kill the port that localhost:8080 is running on.
To do this, you need to do two commands in the terminal :N

sudo lsof -i tcp:8080

kill -15 PID 

NB! PID IS A NUMBER PROVIDED BY THE FIRST COMMAND.

The first command gives you the PID for the localhost:8080.
Replace the PID in the second command with the PID that the first command gives you to kill the process running on localhost:8080.