Question

What values will be displayed in JOptionPane when the following code is executed?

int a = 5, b = 2,

while (a < 20)

{

    a = a + b;

    b = a - b;

JOptionPane. showMessageDialog (null,a);

}

Answer 1

No values will be displayed in JoptionPane because it will give exception in thread "main", due to null.