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Discussion :: Operators and Assignments

  1. What will be the output of the program?

     class Test 
 {    
    static int s;   
    public static void main(String [] args)     
    {   
       Test p = new Test();    
       p .start();    
       System.out.println(s);   
    }    
   
    void start()      
    {          
        int x = 7;       
        twice(x);         
        System.out.print(x + " ");  
   }     
 
    void twice(int x)     
    {      
        x = x*2;      
        s = x; 
    } 
 }

    2. A.

    7 7
    B.

    7 14
    C.

    14 0
    D.

    14 14

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    Answer : Option B

    Explanation :

    The int x in the twice() method is not the same int x as in the start() method. Start()'s x is not affected by the twice() method. The instance variable s is updated by twice()'s x, which is 14.

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