class Eggs { int doX(Long x, Long y) { return 1; } int doX(long... x) { return 2; } int doX(Integer x, Integer y) { return 3; } int doX(Number n, Number m) { return 4; } public static void main(String[] args) { new Eggs().go(); } void go() { short s = 7; System.out.print(doX(s,s) + " "); System.out.println(doX(7,7)); } } What is the result?

technology programming languages

  1. 3 3

  2. 4 1

  3. 4 3

  4. 2 1

Show answer
Correct Option: C

AI Explanation

To determine the result of the given code, let's go through each step:

  1. The go() method is called from the main() method.
  2. Inside the go() method, a variable s of type short is assigned a value of 7.
  3. The doX(s, s) method is called with the arguments (s, s).
    • Since there is no exact match for the arguments (short, short), the compiler looks for the closest match.
    • The closest match is the doX(Number n, Number m) method, which takes two Number objects as arguments.
    • The short values s are automatically promoted to Integer objects, which are a subclass of Number.
    • Therefore, the doX(Number n, Number m) method is called.
    • This method returns 4.
  4. The doX(7, 7) method is called with the arguments (7, 7).
    • The exact match for the arguments (Integer, Integer) is found in the doX(Integer x, Integer y) method.
    • This method returns 3.
  5. The result is printed as 4 3.

Therefore, the correct answer is C) 4 3.

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