Java OCA OCP Practice Question 478

Question

How many 1s are outputted when the following application is compiled and run? 


public class MyClass { 
        public static void main(String... in) { 
           int intersections = 100; 

           int streets = 200; 
           if (intersections < 150) { 
              System.out.print("1"); 
           } else if (streets && intersections > 1000) { 
              System.out.print("2"); 
           } if (streets < 500) 
              System.out.print("1"); 
           else // w w  w  .  jav  a  2s . c  o m
              System.out.print("2"); 
        } 
}
  • A. None
  • B. One
  • C. Two
  • D. The code does not compile. 


D.

Note

The code does not compile, making Option D the correct answer.

The reason the code does not compile is due to the test in the second if-then statement.

The expression (streets && intersections > 1000) is invalid because streets is not a boolean expression and cannot be used as the left-hand side of the conjunctive logical && operator.

The line of code is designed to resemble the corrected expression (streets > 1000 && intersections > 1000.

Notice the fixed expression requires two relational > operators.

If the second if-then statement was corrected, then the application would compile and produce two 1's, making Option C the correct answer.




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