Answers for "how to stop the port which is already in use"

how to stop port 8080

netstat  -ano  |  findstr  <Port Number>

Port 4200 is already in use. Use '--port' to specify a different port

sudo lsof -t -i tcp:4200 | xargs kill -9

how to close all ports angular

If you use 'Visual Studio Code' just click on the 'kill Terminal' on the top-right of the terminal and all the terminals ports will colsed

how to stop port 8080

C:UsersRevisitClass>taskkill /F /PID 19788
SUCCESS: The process with PID 19788 has been terminated.