Mock interview-2

Source: Dev.to

Interview Questions

1. Tell me about yourself?
2. Why move from Mechanical Engineering to IT?
3. If Mechanical Engineering was your first choice, why choose an IT course now?
4. Why Java?
5. Is Java easy?
6. What does compiling a program involve?
7. What happens during execution?
8. How can you produce output without using System.out.println()?
9. What does System.out.println() output?
10. What are control‑flow statements?
11. What is a switch case?

Example 1

switch (x) {
    case 1:
        System.out.print("One ");
    case 2:
        System.out.print("Two ");
    case 3:
        System.out.print("Three ");
    default:
        System.out.print("Default");
}

Output: Two Three Default

Example 2

switch (x) {
    default:
        System.out.print("Default ");
    case 1:
        System.out.print("One ");
    case 2:
        System.out.print("Two ");
}

Output: Default One Two

Example 3

switch (ch) {
    case 'A':
        System.out.println("A");
        break;
    case 65:
        System.out.println("Sixty Five");
}

Output: A
(The 'A' case matches; 65 is treated as an int.)

Example 4 (switch expression)

String result = switch (day) {
    case 1 -> "Monday";
    case 2 -> "Tuesday";
    case 3 -> "Wednesday";
    default -> "Invalid";
};

System.out.println(result);

Output: Wednesday