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Java.lang Class - Programming

Q1:

What will be the output of the program (in jdk1.6 or above)? 
public class BoolTest 
{
    public static void main(String [] args) 
    {
        Boolean b1 = new Boolean('false');
        boolean b2;
        b2 = b1.booleanValue();
        if (!b2) 
        {
            b2 = true;
            System.out.print('x ');
        }
        if (b1 & b2) /* Line 13 */
        {
            System.out.print('y ');
        }
        System.out.println('z');
    }
}

A z

B x z

C y z

D Compilation fails.

ANS:A - z

Boolean b1 is initialized with false & Boolean b2 is initialized with false due to line no 7(Boolean b2 = b1.BooleanValue();).

Now the if loop will return true as !FALSE is TRUE & thus will print x.

if( b1 & b2) => false & true =>false.

The next loop will return false as the value of b2 is changed from FALSE to TRUE because of the statement b2=true on line 10.

Thus b1=false and b2=true.

Thus the output is xz.