24. Using the switch statement in Java, write a program to display the name of the city according to the user's choice.
D — Delhi, M — Mumbai, K — Kolkata, C — Chennai

Java

import java.util.Scanner;
 
public class CityName {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        System.out.print("Enter your choice (D/M/K/C): ");
        char choice = sc.next().charAt(0);
 
        switch (choice) {
            case 'D':
            case 'd':
                System.out.println("Delhi");
                break;
 
            case 'M':
            case 'm':
                System.out.println("Mumbai");
                break;
 
            case 'K':
            case 'k':
                System.out.println("Kolkata");
                break;
 
            case 'C':
            case 'c':
                System.out.println("Chennai");
                break;
 
            default:
                System.out.println("Invalid choice");
        }
 
        sc.close();
    }
}

Output

Sample Input 
Enter your choice (D/M/K/C): M

Sample Output 
Mumbai

✅ Key Points

Uses switch–case
Handles uppercase and lowercase input
Includes default case for invalid input
Uses charAt(0) to read a character