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Cameron's SCJA Mock Exam Question (pg.200, 9-4)

 
Rob Poulos
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Here is the question:

Given the following code snippet, What would be valid lines of code to replace the comment "//line xxx"?


potential aswers (choose 1):

According to the book, the correct answer is A and it explains that the other answers will compile but will trigger a runtime exception.

now. I tried this in Eclipse and found the following:


this results in a "Exception in thread "main" java.lang.ClassCastException: java.lang.Float cannot be cast to java.lang.Double" error

this results in the code successfully compiling and running; printing 10.1 to the system.out

this results in the code successfully compiling and running; printing 10.1 to the system.out

this results in a "Exception in thread "main" java.lang.ClassCastException: java.lang.Float cannot be cast to java.lang.Integer" error

This being said, i would think both B and C would be the only valid answers. Or am i missing something?

 
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