how to have the user define variabled

Question

I am trying to create a simple programming language using if else if and switch case
I want the user to be able to define variables how?

Answer 1

import java.util.Scanner;

class MyClass {
public static void main(String[ ] args) {
Scanner myVar = new Scanner(System.in);
System.out.println(myVar.nextLine());
}
}
I think you mean that, don`t you?

Answer 2

привет