how to know the available ports in windows code example

Example 1: find out process using port windows

netstat -ano | findstr 8080

Example 2: how to check the ports in use in windows cmd

netstat -aon

Example 3: how to check the ports in use in windows cmd

netstat -ab

Example 4: see what ports are in use

Get-Process -Id (Get-NetTCPConnection -LocalPort portNumber).OwningProcess