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Operators and Assignments - Finding the output
Operators and Assignments - Pointing out the correct statements

  1. What will be the output of the program?

    class SC2 
{    
   public static void main(String [] args)     
   {          
       SC2 s = new SC2();   
       s.start();  
   }    

   void start()    
   {        
      int a = 3;     
      int b = 4;            
      System.out.print(" " + 7 + 2 + " ");           
      System.out.print(a + b);            
      System.out.print(" " + a + b + " ");         
      System.out.print(foo() + a + b + ");     
      System.out.println(a + b + foo());       

   }     

    String foo()     
    {       
       return "foo";  
    } 
 }

    2. A.

    9 7 7 foo 7 7foo
    B.

    72 34 34 foo34 34foo
    C.

    9 7 7 foo34 34foo
    D.

    72 7 34 foo34 7foo

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  2. 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; 
    } 
 }

    3. A.

    7 7
    B.

    7 14
    C.

    14 0
    D.

    14 14

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  3. 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; 
  } 
}

    4. A.

    null null 42
    B.

    0 0 42
    C.

    0 42 42
    D.

    0 0 0

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  4. What will be the output of the program?

    class BoolArray 
{    
   boolean [] b = new boolean[3];     
   int count = 0;  
  
   void set(boolean [] x, int i)   
   {         
        x[i] = true;      
        ++count;     
  }     
  
   public static void main(String [] args)      
   {
      BoolArray ba = new BoolArray();         
      ba.set(ba.b, 0);                                     
      ba.set(ba.b, 2);         
      ba.test();     
 }   
 
   void test()    
   {        
       if ( b[0] && b[1] | b[2] )                                                    
         count++;      
       if ( b[1] && b[(++count - 2)] )                         
         count += 7;         
      System.out.println("count = " + count);            
   }     
}

    5. A.

    count = 0
    B.

    count = 2
    C.

    count = 3
    D.

    count = 4

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  5. What will be the output of the program?

    public class Test 
{    
    public static void leftshift(int,int j)    
    {
        i=j;
    } 
    public static void main(String args[])      
    {       
       int i = 4, j = 2;           
       leftshift(i, j);           
       System.out.println(i); 
    }  
 }

    6. A.

    2
    B.

    4
    C.

    8
    D.

    16

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