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Discussion :: Language Fundamentals

  1. What will be the output of the program?

     public class X 
 {   
   public static void main(String [] args)           
   {
         String names [] = new String[5];         
         for (int x=0; x 2]);  
             names[x] = args[x];
         System.out.println(names[2]);
   } 
}

    and the command line invocation is

    > java X a b

    2. A.

    names
    B.

    null
    C.

    Compilation fails
    D.

    An exception is thrown at runtime

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    Answer : Option B

    Explanation :

    The names array is initialized with five null elements. Then elements 0 and 1 are assigned the String values "a" and "b" respectively (the command-line arguments passed to main). Elements of names array 2, 3, and 4 remain unassigned, so they have a value of null.

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