What will be the output of the program?

public class WrapTest {
 public static void main(String[] args) {
  int result = 0;
  short s = 42;
  Long x = new Long("42");
  Long y = new Long(42);
  Short z = new Short("42");
  Short x2 = new Short(s);
  Integer y2 = new Integer("42");
  Integer z2 = new Integer(42);
  if (x == y) /* Line 13 */ result = 1;
  if (x.equals(y)) /* Line 15 */ result = result + 10;
  if (x.equals(z)) /* Line 17 */ result = result + 100;
  if (x.equals(x2)) /* Line 19 */ result = result + 1000;
  if (x.equals(z2)) /* Line 21 */ result = result + 10000;
  System.out.println("result = " + result);
 }
}

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) result = 1 - This option is incorrect because it only considers the first if statement, which checks if x and y are equal using the == operator. However, the == operator is used to compare references for objects, not their values.

Option B) result = 10 - This option is correct because it considers the second if statement, which checks if x and y are equal using the equals() method. Since x and y have the same value, this condition is true, and result is incremented by 10.

Option C) result = 11 - This option is incorrect because it assumes that the condition in the first if statement is true. However, as mentioned earlier, the == operator is used to compare references, not values.

Option D) result = 11010 - This option is incorrect because it assumes that all the if statements are true. However, only the second if statement is true, so result is incremented by 10.

The correct answer is B) result = 10. This option is correct because the second if statement, which checks if x and y are equal using the equals() method, is true and increments result by 10.

• Thanks
• Wrong explanation