How to terminate application running in background

Step 1: Identify the TCP process id binding to a specific port
$>netstat -ano | find "8080"

  TCP    0.0.0.0:8080           0.0.0.0:0              LISTENING       28268
  TCP    [::]:8080              [::]:0                 LISTENING       28268

Step 2: Kill the process
$>taskkill /F /PID 28268