Answer 1

If you're asking what Scanner is for, you can utilize it to "scan" the System Input so that you can obtain input from the user.

https://code.sololearn.com/c02h5SPR1EF3/#java

Example:

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
String name = "";
Scanner scnr = new Scanner(System.in);

name = scnr.nextLine();

System.out.println(name);
}
}