Which two modifications should you make so that the code compiles successfully?

4 thoughts on “Which two modifications should you make so that the code compiles successfully?”

1. firstly, to work with IOException, it is needed to add a line in the beginning of that program “import java.io.IOException;” , otherwise compiler will not understand, what is IOException. With “import java.io.IOException;” added, result will be following:
   #javac Test37.java

   Test37.java:5: error: unreported exception IOException; must be caught or declared to be thrown
   throw new IOException();
   ^
   1 error

   Which gives a hint that on line 5 it is needed to trow IOException (answer B). Then the same should be done for the main method (answer C)

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2. Answer B, C:

   (B): A checked exception is thrown, meaning that it should be handled (by try/catch) or declared. Answer B solves this problem.

   (C): The caller method should also declare or handle the exception thrown by the called method. Answer C solves this problem.

   (D) is not correct because we have two catch blocks, and the preceding one is catching an exception that is a super class of the one caught in the consequent catch block.

   Other options are non-sense.

   4

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3. Answers are BC

   D is incorrect because “Unreachable catch block for IOException. It is already handled by the catch block for Exception”

   class X{
   public void printFileConent(){
   throw new IOException();
   }
   }

   public class Test {
   public static void main(String[] args) {
   X xobj = new X();
   xobj.printFileConent();
   }
   }

   1

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4. BC

   D is wrong cause IOException is already catched by Exception

   3

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