What is wrong with my code? it should print according to our input

Question

import java.util.Scanner;
public class Program {
enum Rank {
SOLDIER,
SERGEANT,
CAPTAIN
}
public static void main(String[] args) {

Scanner rangIn = new Scanner(System.in);

String beirt = rangIn.next();
Rank a = Rank.beirt;

switch(a) {
case SOLDIER:
System.out.println("Soldier says hi!");
break;
case SERGEANT:
System.out.println("Sergeant says Hello!");
break;
case CAPTAIN:
System.out.println("Captain says Welcome!");
break;
}
}
}

Answer 1

The following statements...
String beirt = rangIn.next();
Rank a = Rank.beirt;

... are not valid. You can't convert a string to an enum type directly.

You could do it this way:

import java.util.Scanner;
public class Program {
enum Rank {
SOLDIER,
SERGEANT,
CAPTAIN
}
public static void main(String[] args) {

Scanner rangIn = new Scanner(System.in);

String beirt = rangIn.nextLine();
Rank a;

switch(beirt.toLowerCase()) {
case "soldier" :
a = SOLDIER;
break;
case "sergeant":
a = SERGEANT;
break;
case "captain":
a = CAPTAIN;
break;
}
switch(a) {
case SOLDIER:
System.out.println("Soldier says hi!");
break;
case SERGEANT:
System.out.println("Sergeant says Hello!");
break;
case CAPTAIN:
System.out.println("Captain says Welcome!");
break;
}
}
}