Menu
Home / Java Programming / Operators and Assignments :: Discussion

Discussion :: Operators and Assignments

  1. What will be the output of the program?

    class Two 
{    
   byte x; 
}  
class PassO  
{    
  public static void main(String [] args)     
 {       
     PassO p = new PassO();           
     p.start();   
 }     
 void start()    
 {     
    Two t = new Two();          
    System.out.print(t.x + " ");                    
    Two t2 = fix(t);         
    System.out.println(t.x + " " t2.x);  
 }    
 Two fix(Two tt)  
 {      
     tt.x = 42;   
     return tt; 
  } 
}

    2. A.

    null null 42
    B.

    0 0 42
    C.

    0 42 42
    D.

    0 0 0

    View Answer

    Workspace

    View Answer

    Answer : Option C

    Explanation :

    In the fix() method, the reference variable tt refers to the same object (class Two) as the t reference variable. Updating tt.x in the fix() method updates t.x (they are one in the same object). Remember also that the instance variable x in the Two class is initialized to 0.

Write your comments here:

Be The First To Comment