How can I create a sever to submi my codes

Answer 1

Server is basically an Online Computer.

Install an Apache stack into your pc and there you go.

Answer 2

Monisha🌞 True that!

I forgot the java tag

Yes you can use apache tomcat for that (servlet programming j2ee)
you can either install with help of Any IDE or just from executables

if you want to submit code online then try AWS. Launch an Instance of windows or linux and Install tomcat from SSH 👍