Q. What will be the output of the following Java program?
class box
{
int width;
int height;
int length;
}
class mainclass
{
public static void main(String args[])
{
box obj = new box();
System.out.println(obj);
}
}

• (A) 0
• (B) 1
• (C) Runtime error
• (D) classname@hashcode in hexadecimal form