Question

JAVA

Project: Student Major and status

Problem Description: 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 a number character 1, 2, 3 or 4, which indicates whether a student is a freshman, a sophomore, junior or senior. Suppose the following characters are used to denote the majors:

M: Mathematics

C: Computer Science

I: Information Technology

Here is a sample run: Sample: Enter two characters: M3 Mathematics Junior Enter two characters: C4 Computer Science Senior Enter two characters: T3 Invalid input: Wrong major code Enter two characters: I5 Information Technology Invalid input: wrong status code

What to deliver? Your .java file including: • All the above sample runs Your code with other appropriate comments.

Hint:

1. Use charAt() and if else loops

2. Use the sample run in the instruction to test your program to make sure it is correct before you submit it.

Answer 1

Please find the code below:::

StudentMajor.java

package classes3;

import java.util.Scanner;

public class StudentMajor {
   public static void main(String[] args) {
      
       Scanner sc = new Scanner(System.in);
       String input;
       while(true){
           System.out.print("\nEnter two characters : ");
           input = sc.nextLine();
           boolean valid = true;
           if(input.length()==2){
               if(input.charAt(0)=='M'){
                   System.out.print("Mathematics ");
               }else if(input.charAt(0)=='C'){
                   System.out.print("Computer Science ");
               }else if(input.charAt(0)=='I'){
                   System.out.print("Information Technology ");
               }else{
                   System.out.println("Invalid input: Wrong major code");
                   valid = false;
               }
               if(valid){
                   if(input.charAt(1)=='1'){
                       System.out.print("freshman ");
                   }else if(input.charAt(1)=='2'){
                       System.out.print("a sophomore");
                   }else if(input.charAt(1)=='3'){
                       System.out.print("junior ");
                   }else if(input.charAt(1)=='4'){
                       System.out.print("senior ");
                   }else{
                       System.out.println("Invalid input: wrong status code");
                       valid = false;
                   }
               }
           }else{
               System.out.println("Invalid input");
           }
       }
      
   }
}

output: