Question

Using switch case statement, write a menu driven program to perform the following tasks:

1. To generate and print the letters from A to Z along with their Unicode. 
   Letters                              Unicode
   A                                        65
   B                                        66
   ..........                                  .........
   ..........                                  .........
   Z                                        90
2. To generate and print the letters from z to a along with their Unicode.
   Letters                               Unicode
   z                                          122
   y                                          121
   ..........                                    .........
   ..........                                    .........
   a                                          97

Answer 1

import java.util.Scanner;

public class Q11
{
    public static void main(String args[])  {
        Scanner in = new Scanner(System.in);
        
        System.out.println("Enter 1 for A to Z with unicode");
        System.out.println("Enter 2 for z to a with unicode");
        
        System.out.print("Enter your choice: ");
        int ch = in.nextInt();
        
        switch (ch) {
            case 1:                
                System.out.println("Letters" + "\t" + "Unicode"); 
                for(int i = 65; i <= 90; i++) 
                    System.out.println((char)i + "\t" + i);    
                break;
            
            case 2:
                System.out.println("Letters" + "\t" + "Unicode");
                for (int i = 122; i >= 97; i--)   
                    System.out.println((char)i + "\t" + i); 
                break;
            
            default:
                System.out.println("Incorrect Choice");
        }
    }
}