To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) 1 1 - This option is incorrect because the first call to doX
passes two short
values (s
), and the method with parameters Integer x, Integer y
is not applicable. The second call to doX
passes two int
values (7
), and the method with parameters int doX(long... x)
is not applicable. Therefore, the output is not 1 1
.
Option B) 2 1 - This option is incorrect because the first call to doX
passes two short
values (s
), and the method with parameters Integer x, Integer y
is not applicable. The second call to doX
passes two int
values (7
), and the method with parameters int doX(long... x)
is not applicable. Therefore, the output is not 2 1
.
Option C) 3 1 - This option is correct. The first call to doX
passes two short
values (s
), and the method with parameters int doX(Number n, Number m)
is applicable because short
is widened to int
, and Number
is a superclass of Integer
. Therefore, the output is 3
. The second call to doX
passes two int
values (7
), and the method with parameters int doX(long... x)
is applicable because int
can be autoboxed to long
. Therefore, the output is 1
. The overall output is 3 1
.
Option D) 4 1 - This option is incorrect because the first call to doX
passes two short
values (s
), and the method with parameters Integer x, Integer y
is not applicable. The second call to doX
passes two int
values (7
), and the method with parameters int doX(long... x)
is not applicable. Therefore, the output is not 4 1
.
Option E) 3 3 - This option is incorrect because the first call to doX
passes two short
values (s
), and the method with parameters int doX(Number n, Number m)
is applicable because short
is widened to int
, and Number
is a superclass of Integer
. Therefore, the output is 3
. The second call to doX
also passes two int
values (7
), but it does not match any of the available methods. Therefore, the output is not 3 3
.
Option F) 4 3 - This option is incorrect because the first call to doX
passes two short
values (s
), and the method with parameters int doX(Number n, Number m)
is applicable because short
is widened to int
, and Number
is a superclass of Integer
. Therefore, the output is 3
. The second call to doX
also passes two int
values (7
), but it does not match any of the available methods. Therefore, the output is not 4 3
.
The correct answer is Option C) 3 1. This option is correct because the first call to doX
is resolved to the method int doX(Number n, Number m)
, and the second call to doX
is resolved to the method int doX(long... x)
.