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Discussion :: Operators and Assignments

  1. What will be the output of the program?

    class Equals 
{    
   public static void main(String [] args)     
   {
       int x = 100;      
       double y = 100.1;       
       boolean b = (x = y); /* Line 7 */                
       System.out.println(b);   
   } 
}

    2. A.

    true
    B.

    false
    C.

    Compilation fails
    D.

    An exception is thrown at runtime

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    Answer : Option C

    Explanation :

    The code will not compile because in line 7, the line will work only if we use (x==y) in the line. The == operator compares values to produce a boolean, whereas the = operator assigns a value to variables.

    Option A, B, and D are incorrect because the code does not get as far as compiling. If we corrected this code, the output would be false.

     

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