(Student major and status) Write a program that prompts the user to enter two characters and displays the major and status represented in the characters

/*
(Student major and status) Write a program that prompts the user to enter two
characters and displays the major and status represented in the characters. The first
character indicates the major and the second is number character 1, 2, 3, 4, which
indicates whether a student is a freshman, sophomore, junior, or senior. Suppose
the following chracters are used to denote the majors:
M: Mathematics
C: Computer Science
I: Information Technology
*/

import java.util.Scanner;

public class Exercise_04_18 {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);

		// Prompt the user to enter two characters
		System.out.print("Enter two characters: ");
		String str = input.nextLine();

		// Extract major and status from string
		char m = Character.toUpperCase(str.charAt(0));
		char s = str.charAt(1); 

		
		// Display the major and status represented in the character
		switch(m)
		{
			case 'M': System.out.print("Mathematics "); break;
			case 'C': System.out.print("Computer Science "); break;
			case 'I': System.out.print("Information Technology"); break;
			default : System.out.println("Invalid input");
						 System.exit(1);
		}

		switch(s)
		{
			case '1': System.out.println("Freshman"); break;
			case '2': System.out.println("Sophomore"); break;
			case '3': System.out.println("Junior"); break;
			case '4': System.out.println("Senior"); break;
			default : System.out.println("Invalid input");
		}
	}
}