java - Creating a Markbook in Eclipse -

import java.util.scanner; public class markbook {

public static void main(string[] args) {  system.out.println("what menu access? 0. add students 1. change mark 2. list marks , students");     scanner keyboard = new scanner(system.in);   } 

}

is have, i'm bit rusty on coding abilities, have no idea on how start off, able assist giving tips or help?

provide choices take user input , process

system.out.println("what menu access? 0. add students 1. change mark 2. list marks , students"); int choice = keyboard.nextint();  if (choice == 0) {     // run code add students } else if (choice == 1) {     // code change mark } else if (choice == 2) {     // list marks code } else {     system.out.println("invalid input");     //  handle invalid input somehow if want }